THI LÝ CHUYÊN NGUYỄN HUỆ HN (2010)

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MON
Vdf t Y
.r"'l)('
{?di
gian ldm
bdi: 90
phtu;
Me
di thi 485
ir<',/l:l'1lFi'',r'li'i
'1"'itl'ii\';r.,bp
cdu trdc nghiQm)
/_.i.
_,_qa.,jii
\'t
i
I.
rIIAN

CHUNG
cno
rAr ci
Cacirf
5-INH
(
40;;-
tii cAu
1
rli5n cau 40)
Cdu 1: Anh
sdng
kh6ng
c6 tinh
chAt sau:
A. C6 vdn
t6c Im
vd
h4n.
C, C6
the
truydn
tong mdi
truoirg
vit
chAt.
B.
C6
truyAn
trong chAn khdng.

D.
C6
mang
theo
ndng
luq'ng.
C. 1,41
(s)
D.4
(s)
B;
At
=
2,75
(s)
D. At = 2,25
(s)
0.+1,+2 ). Bi€n
dQ dao dQng
tai
M
det
cuc
dai
khi :
A. Ag =
(2k+1)nl2;
B,
Atg =
2kn; C. d2-d,=

11 D. Aq
:
(2k+l)n;
I
Cdu
8:
Trong cdc dung c9 ti0u
thu dign nhu
quat,
tri lgnh,
d6ng co, nguoi ta phii
n6ng cao hQ
s6 c.Ong suAt nhim
A.
gi6m
c6ng suSt
ti0u thy.
B. tdng
c6ng su6t toi
nhrQt.
C.
giim
cuong
dd ddng diQn.
D. tdng
cucn-rg
d6 ddng diQn.
,
^ ^,.,1.
t. ,

Cdu
9t
Chi3t sudt
cua nudc d6i
voi 6nh
s6ng
mdu
lam ld
n1=1,3371
vd chi0t
sudt
ti d6i cia
thuy tinh ddi vsi nrdc
ld n21=1.13?90.
Cho
v6.n tdc truyAn 6nh
sdng
lam trong
kh6ng
khi l,i c
=
300000 kmis.
Vdn
t6c ctra 5nh
s6ng mdu
lam
troiig
thui
tinh la:
.q t,9?.108m4.

B.
3,52.108
mls
C.2,56.108m/s. D.2,24.108
mls
CAu 10: Cucmg
dQ ddng di6n
ludn.1u6n
tr6
pha
hcrn hi€u
ditn th6
o hai dAu doan mach khi
A. doan mach
c6 I- vd C
mac
ndi
ti€p.
B.
dcan
mach chi c6 tu
C;
C.co4nmpchc6RvdCmi.noiti5p.D.doarrmachc6RvALmicnoitiep.
Trang 1/6
-
Ma
dA thi
485
CAu
2: Kli

s6ng
dimg
xuAt
hiQn
tr0n mQt
soi
dAy
ddn h6i,
dao dQng
cira c6c
phin
tir vat
chAt trong kho6ng
hai
diAm niit
gAn
nhau
nhat
sC
dao
dQng :
A.
nguoc
pha
B, wdng
pha C.
lQch
nha
nhau
f,

D. cr)ng
pha
CAu 3:
Trong mach
diQn xoay
chiAu, s6
chi
cria vgn k6
cho
bitit
gi6rii
ndo cfia hiQu diqn
thC? Mgt v6n
k6 mic
vdo
hai dAu tg
rliQn
trong
doan
m4ch xoay
ohi6u,
chi s6
cria v6n k6
le
U.
Khi d6 thUc sU tp
diQn
phdi
chiu mQt
hieu dien

tire iOl
Aa ld
bao nhi6u?
Hdy
chgn
ddp 6n EL|NG
trong
c6c k6t
quA duoi dAy:
A.
Von k0
cho bi6t
gid
tri
tuc thoi.
Hieu
diQn thii tdi
da
mA tu diqn
phdi
chiu ld Uo = U
Jl
B.
V0rr k6 chc
bi6t
ele
fi higu dpng.
HiQu
di€n the t6i
da md

tu dienphai
chiu li uo =
g7u5
.
C.
Von
k€
cho bi€t
gra
ti hiqu
dr,rng. Higu
diqn
th,itdi.da
mi tp
diQn
phdi
chlu ldUo; U!e
.
D.
Vdn
ki5 cho
bicigi6
trl bi6n
d0. Hiqu
diqn
thO ti5i
da mA
tu diqn
phdi
chlu

ld
U.
CAu
4: N6i
vA dic
di6m
cria
tia
tft ngoai,
chon
c6u
phdt
bi€u
sai Tia
tu ngo4i'
A. trong
suOt
OOi
voi thu! tinh,
nudc.
B,
bi
hap
thp bdi tdng 6zdn ciia
khi
quy0n
Tr6i DAt
C. ldm
ph6t quang mQt Sd chdt.
D.

Idm ion hod kh6ng
khi'
CAu 5:
0 cung
mQt
noi, con lic
dmi mQt
c6 chiAu ddi
l1 dao
d6ng voi
chu
ky Tr =
2,828
(s)
thi con lic don hai
c6
I
chiAu
ddi lz=
'*
dao ddng
voi chu lcy ld:
)-
A.5,656
(s)
,
8.2
G)
CAu
6: Tr0n

hinh
vd dumg ndt
liAn iA
gi6n
dO 1
''I
song tgi mQt
thoi
di0m, ndt di?t le hinh
d4ng s6ng
. ., I
I
vio thoi
di€m
sau
d6 At
gi6y.
S6ng
lan truyOn
theo chidu dumg
cta truc Ox vo{
tdc dg
4-q1s
Gi6
tri At nio duoi
ddy khOng th6a min
diAu kign
cfiabii
to6n :
A.

At = i,75
(s)
C. At = 0.75
(s)
CAu
7: Trong
qu6
trinh
giao
thoa s6ng,
dao
dQng
tdng
hry t4i M
chinl
ld sg tiSng hqp cric s6ng thdnh
pnan.
Cgi
Atp ld d0 igch
pha
cria
hai
s6ng
thdnh
phdn
t4i N4, dz, dr 1A khoArig cSch tir M
di5n
hai ngudn
s6ng.
{Voi

k =
Flinh
d4ng sSng
CAu
11:
Ktri
mQt
vat hAp
thu.6nh
s6ng
phdt ra
tt mQt
ngu6n,-thi.{iAi
Ag.ct1,v,it,
.
A.
Bing
nhigt
dO
cira ngud'.
.
C6
thC
c6
gi6
tribAt
kt
C.
TirAi
hcmnhiet

dO
cira
ngudn.
D. Cao hon
nhigt
dQ ngu6n.
cau
12:
MQt
s6ng
co hgc
lan
truyan
ftong
mQt
m6i
truong v?t chat
tai mot
ditlm
cdch ngudn
x
(m)
c6
phuong
trinh
s6ng
,,
=
4"os(*
t

-Ti(cm).
Van
t6c
truy}n
s6ng
trong
mdi
truoirg
d6
c6
gi6
tri:
A.2mls
'
i. ,t,
c. o,5m/s
D'
5 m/s'
CAu
13: Trong
thi
nghiQm
cta
Young,
khoang
c6ch
gifa
hai khe SrSz
d6n
mdn ld

2m'
Ngudn
S
ph6t
ra
rinh
sang
il#i
jt,
.6"n
OS,ifrri
khe
m6t
Uro-ang
o,Sm.
Niiu
doi S
theo
phuong'vuding
gdc
vd
SrSz
mOt
do4n
lmm
thi
v6n sang
trung tdm
s0
dich

chuy6n
mQt
doan
ld
bao
nhi6u
tr6n mAn
?
A.
6mm.
t.
Kh6ng
dich
chuy6n'
C'
4mm'
D'
5mm'
CAu 14:
X6c
dinh
dao
dQng
t6";;;;=
"
*"r**, ctra ba
dao dQng
diAu
hda
cr)ng

phuong
cung
tin s6
sau
:
xr
=
4.cos(30t)
(cm)
x,:
-4'sin(30t)
,
t=
4J2.cos(30,
-
X)
(cm)'
vlrvdl
A.
x=8.cos(30t)(cm)
4.Jacos(3ot
+;)
(cm)
c.
x=+.cos(3ot-f)
Cdu
15:
Nguyen
tic
cia

mach
chgn
s6ng
trong
m6y
thu
tlanh.dya
tr6n
hign
hrgng:
A.
Giaolhoa
s6ng.
B. CQng
huong
diQn.
C. NhiEu
x4
s6ng.
D.
S6rrg
dtmg.
C6u
16:
Am
thanh
do
nguoi
hay mQt
nhaq

cu
ph6t ra
c6
d6 thi
dugc
bidu
di6n
theo
thoi
gian
c6
d4ng:
A.
Duong
cong
bAt
ki
B'Eu,*9
hinh
sin'
c.
Duong
do
thi
him
cosin.
D.
Bi€n
thi6n
tuan hoan.

Ciu
I7
:Vigc
tao
ra
ddng
diQn
xg-ay,
cli-Arr-3.
pha-c6
uu
di6m
nio
trong
s6
cAc dlc
diAm
sau
hon
hin
ddng
l
xoay
-
B. Khdng
cry bO
g6p
khi
ch6
t4o m6y

phdt dign.
D.
M6y
c6 c6u
t4o
don
giin.
cffu
18:
Mgt
con
16c
ld
xo theng
drmg
c6
v4t n4ng
khoi
luqng
m
= 0,5kg,
ld xo
c6 dQ
cung k
=
0,5N/cm,
dang
dao
dQng
d6u

hod.
Khi
vin
t6c
crta
vat Ie
20cm/s
ihi
giu tdc cria n6
bing
zJi n
ts2.NEng
luqng
dao
dQng
cria
hQli:
A.3j
B.40mJ
C'0,04mJ
'D'0'16J
Ciu
19:
Chgn
ph6t
biiiu
saikhi
n6i
vA
S-Ctt"tutru-dng'

A.
DiQn
truong
vd
tri truong
le hai
mAt
thC hien
fhe"
nhuu
cria mQt
lopi
truong
{W. {.{Soi
ld
diQn
tu
trumg'
B.
Tri
truong
trong
nam
ch6m
vinh
cuu
ld mot
truong
hgp
ngo4i

l0 ta
chi
quan
s6t
thay
hr
truong
C.
Kh6ng
thti
c6
diqn
truong
vd
tir truong
tdn
tai
dQc
l4p
D.
Diqn
**g birin
thi6n
* ttt
t**g
xo6y
vd nguo.
c
lai
tt

truong
bi€n
thi€n sinh
ra diQn
trumrg
xo6y'
Ciu
20:
Khi
truyAn
t6i
mQr
c6ng
sudt
diQn
p
tir noi
sin
xuAt
diln noi
ti€u
thu,
dii
gidm
hao
phi tron
ducrng
ddy
do
tod

nhiet
thuc
t6 nguoi
ta tiiln
hanh
ldm
nhu
thO,ndo
?
. !
1"
pilfaau
.f;u
nfra
mAy
diQn
rrr6y
tdng
thil
vd d
noi
ti6u
thq m6y
ha thii.
g.
;il
O
aar r"
.,t.
"f1d

m6y
diQn
may
ha
tfr6
va dat
o
noi
tieu ti,u m6y
h4
thiS hoAc
teng
th6
tuy
vdo nhu
cAu
'*el8nlt^Iult
d
diu
ra
cua
nhi
m6y
dign
m6yrdng
th6,
diQ' tren
duong ddy cluoc
sri
deng

tr,uc
tii5p
mi
kh6ng
). , ,.A., 1
can may
Dlen
ule.
D.
DAt
o
ddu
cria nhi
m6y
di6n
m6y
rdng
thii ve
d{t
d
noi
ti€u thg m6y ha thli
hoAc
tdng
thii
ruy
vdo
nhu
ciu
trmg

dla
phuong.
CAuZlt
Trong
dao
dQng
diau
hda
cia
con
lic
don,
ph6t bi6u
riAo
sau
dAy ld dring?
A.
Luc
k6o vd
phu thudc
vdo khdi
luong
cia
vqtn{ng'
B. Luc
kdo vA
pttp
tt.tug.
vdo
chidu

{di
cua
con-ldc'
C. TAn
s6
g6c
cira
vft
phr,r thudc
vdo.kh6i'luqng
cira
vdt'
D. Gia
ti5c
cria v{t
phir
thuQc
vio
kh6i luqng
cta
v at'
.J2cos(301)
(cm)
,
.l
ctueu
I
pna:
A.
Titlt

kiQm
duong
ddy
trong
khi
tai
dien.
C.
Tao
duoc
tt
truong
quaY.
ATI{ANH
TO
COSOI
frangZ/6-
Ma
dC
thi
485
CAu
22:
Trong
thi
nghiQm
giao
thoa
6nh s6ng dung
hai

khe
Ygung, hai kn9
dug_c chiiSu bing
dnh
sang
c6
budc
s6ng l"
=
0,5pm,
bi6t
SrSz
= a = 0,5mm,
khoAng
cdch
tu mqt
phdng chria hai
\he
d{ mAn
quan
srit ld
D
=
1m.
Tai
vitri M c6ch
vdn trung
tdm
mQt khoeng x = 3,5mm,
c6 vAn s6ng

h,a:
vdn t6i, bfe mdy?
A.
Vdn s6ng bAc
3.
B, Ven
t6i bOc 4. C.
Ven l.f.ibdc2.
D. Van
sdng
bAc 4.
Ciu
23: Cho mpch
dien
nhu hinh
vE bOn, L
thuAn
:
cdm. Dtng
v6n k6 nhiet
lf tudng
do hiQu dipn
thiS
ta dugc i UeM
=
75
V; Ur's=100/3
ff);.
Bi6t rlng
hiQu diQn th6

uap vuOng
pha
voi urun.
Tinh hiQu
disn
th6 hi€u
dung
gifia
M,
N : Uv]i;
A.
Urnr =
75
(V);
B.Ur,or
= 55
(V);
Cbta24:
Trong
mQt
thi nghiQm
vd
giao
thoa 6nh sang.
Hai
khe I-6ng
cdch nhau
3 mm, hinh inh
giao
thoa

duoc
hung
irdn marianl
c6ch
i'ai
khe
3m.
Sr,t
dpng
rihh
sang
tring
c6 budc s6ng fil
0,40
Pin
dtin
0,75
pm.
Tr0n
man
quaisdt
thu
duoc cke
dhiquang
ph6.
B0 rQng
cria
dei
quang phti ngay s6t v4ch sdng
tring trung

t6m
[i
A. 0,50
mm.
B.0,35
mm.
''
C.0,45
mm.
D. 0'55 mm.
CAu
25: Tai hai
di6m
A,B
trdn m{t nu6c
nguoi
ta thUc
hiqn
hai
dao dQng k6t hqp
cilng biOn dQ 2mm,
cirng
tAn
s6
20Hz
vit
ciing
pha. V|n
t6c truyen
s6ng

tr6n mdt nu6c
2mis.
Coi trong
qu6
trinh
lan tryf An
s6ng trOn
mgt nudc
bi0n d9 dao
dQng khdng
giim.Dao
dQng
tgi M c6ch A
28cm, c6ch
B 38
cm c6 biOn
d$
bdng :
A.0;
B.4cm.
C.2mm;
D.4mm;
Ciu 26: OO
tiri UiCu
di6n
sr;
bjtin
thi0n
cria binh
phuong

v?n
t6c theo
li
dQ trong dao
dgng
diOu hpd
c6 hinh
dang
nio sau
ddy:
A. Duong
elip:-
,
C.
Duong
trbn.
:
Cd:u
27: Cho
m4ch
diQn xoaY
ghi6u
nhu
lo xo ld:
A.6N/m
B.
Mgt
phdn
dusngiypecbol.
D. M$t

phAn
duong
parabol.
B. 30 N/m
C.40N/m
D. 50 N/m
hinh
vE b0n.
.
CuQn
ddy c6
r
=
10
O
,
L
::-*^(lI)
oat
vdo
hai
dAu doan
m4ch
mQt hiqu
di€n
thd
dao dQng
di6u hod
c6
gid

td hieu
dung
ld
U=50V
vA
tdn
si5
f = 50H2.
Khi
diQn
dung
cta
tu
die.n
c6
ei6
tri
le Cr
thi s6
chi cria ampe ki5
ld cgc dpi vd
beng
1A. Gi6
tri
cria R vA
Cr
li
A.R=5oo
vif,:ftgl
B.R=40o

viC:$tFl
t tn_z
vi
c
:
{(o)
C.R=50OvdC:?(F)
D.R=40O
iE
CAu28: Chom4chdiennhuhinhvd:
uoe
=200cos(100nt)(V)
L
R c
R = 100
9,
C = 15,9pF,
cuQn
ddy
thuAn
iAm
c6 dQ tr; cdm L
thay d6i
A
*/-9tdhrffi
l*
B
duoc.
Bi6t
cdng su6t

ti€u thq
cria
m4ch
ld 100W
vd cuong
dQ ddng
diQn trong m4ch
s6m
pha so voi
hiQu diqn
th0
gita
hai
dAu mach.
Gi6 tri L,
cria cuQn
cdm vd
bi6u thric cuong d9
ddng diQn
qua
mach
dugc
x6c dinh:
7,-
A. L,
=
11H);i
=
.E.cos(l00rct
+

|Xnt
B. L,
=
iCHi,i
=
.,D.cos(l00rut
+
flfal
c. L,
=
i6t;;i
=
l.cos(l00
nr'|)(A)
D. L,
:
]e1,,
=
.,,6cos(i00nt
-
fXal
Cdu
29:
MQt
vat m
= 1,6
kg dao dQng
diiu
hda voi
phuong

trinh : x
=
4cos(rot
+|)
@m)
LAy.
g6c
tqa
d0
t4i vi tri cdn
bing. Trong
khoing
thoi
gian
d30
(s)
dAu ti€n te tu ttroi di6m
to= 0, vat di
dugc
2 cm.
DQ cimg cria
CAu 30: MQt
mech
dao
dQng
diQn hr
g6m
mQt cudn ddy
thuin cdm
c6 d0 t.u cdm

L vi
hai tp diQn
Cr vd Cz. Khi
mfc cuQn d6y ri€ng
voi tung
tU
thi chu ki
dao
d6ng
cia mach tuong
ung ld Tr=3rns
vh T2= 4ms.
Chu ki dao d6ng
c'ia
mach
khi
m6c
d6ng
thoi hai
tq song song
voi
cu6n
dAy ld:
D.5ms
Trang3l6 -
Ma dc thi 485
A.2,4 ms.
B. lOms C.7ms
l
Cffu 3i:

M6i mach
dao
dgng
gdm mQt
t9 4200pF
vd mQt cuQn
cdm c6 d0
tU cdm 275mH,
dign
trd thuAn
0,5O.
H6i
phdi
.ung .ip cho mpcliniQt
c6ng
suAt
bao
nhi6u
dC duy tri dao dQng
cira n6
voi hiqu
dign thti
cuc d4i tr6n
[t
ld 6v.
A. P=2,15mW; B.
P=2'75pW;
C. P=
137
pW' D. P:1,37mW;

CAu 32: M6r mach
dao ddng LC
c6 cuQnthuAn
cdm
c6 dQ tr; cdm L= 10r/n
(H)
vd
tU diQn
c6 dipn
dung
C=l/n
(nI).
Bu6c s6ng diQn
tir md
mach d6
c6 th€
ph6t
ra
thu6c dAi s6ng nio trong
thang s6ng
v6
tuydn
:
A. S6ng trung.
B. S6ng
ngnn.
C.
SOng
Oai'
D. S6ng

cgc ngin.
Ciu 33: Cat6t ctra t6
bdo
quang
diqn
dugc
phri
mQt
lcp
C6xi c6 c6ng
tho6t
electron ld
2eV. Cat6t
dugc chi6u
srlng boi chum rinh s6ng
don
sic
c6 bu6c
s6ng
0,5pm.
Dung mAn
ch6n t6ch
mQt
chtm hgp
c6c
electron
quang
didn vd huorg n6
vio ttr truong
d€u

c6
E
vu6ng
g6c
voi
%-',
B
=
4.10-5T. Choh=6,625.10-3al.s,
c=3.i08m/s,
e=I,6.10-leC,
m.:9,1.10-3lkg.Ban
kinh
qui
d4o
c6c
electron
ditrong tir truong
ld:
A.5,87cm
B. 0,59
cm
C.2,86cm
D.3,06cm
Cdu 34: Cho mach diQn nhu hinh
v6
(H.l4).Biet :
R= 80O;
)
r

=
20O; L
:
aH.
Tu C
c6 diQn
dung bi€n
d6i dugc.
HiQu
l\
diqn
thC ues:120"'8
cosl0Ont
(V).
Eien
dung C
phni
nhan
gi6
tri
bao
nhi6u
dd c6ng su6t
trOn
m4ch d4t cuc
tlai.
Cdng
suAt
tieu
thp

irong m4ch hic
d6 ld
bao
nhi6uf
Hiy chgn
k6t
qud
d0ng trong
c6c k6t
qui
dudi
ddy?
A. c:+q F
;
p-"*
=i64
z1\
foP\
*l
t
i
P-"*
=144
w.
c.c:to r,,
-8
max
zTt
R
L,r

C-
tn
(H.14)
F
iP-"*
=120
W.
CAu 35: Dao dQng
diQn tu ndo
duoi
d6y xdy
ra
trong mQt
m4ch dao dQng
c6 th6 c6 ndng
luErg
giim
din theo
thoi
gian:
A. Dao dQng cudng bric.
B. CQng huong dao
dQng.
C. Dao dQng riOng.
D. Dao dQng duy tri.
C6u 36:
MQt mach
digi
g6m
mQt

tU diQn
C, mQt
cu6n cam L thudn
c
,
R'z
cim
khang vi mQt, bi6n
trd R
dugc
mic nOi
tiep.
?at
vdo hai ddu
A F l"F^b-ft-t
a
mach dipn
m0t.hieu
dien thti
xoay
chiAu
u=
,l20Jicos120nt
(V)
(8.1e)
(xem
H.19). Bitit
ring
rmg
voi

hai
gi|tri cfia bi€n
trd : Rr
= i 8 0 vd
.&
= 320 thi cdng suAt
ti6u
thu
P
tr6n
do4n mach
li nhu nhau. COng su6t
P ctiu
do4n m4ch
n6i tr€n
kh6ng
th6
nhan
gi6
tri nAo
trong c6c
gi6
tri sau?
A.P=72W
B. P =
288W
C. P= 144W D. P
= 576W
C6u
37: MQt v{t c6 khdi

lugng
m
= 1008
dao dQng
didu hod
c6 chu
ki ls.
Vgn t6c
cta vpt
qua vitri cAn bing
ld
ve
= 31,4 cnls.Llry x2= l}.Lr,rc
hOi
phuc
cuc
daiticdung
vdo vflt ld:
A. O,2N
B.4N
c.2N D.4N
CAu 38: Trong
gia
dinh, ftic
dang
nghe
dAi, n6u
d-6ng hoqc
ngat Aign
(cho

ddn
i5ng ching h4n)
ta thucrng nghe
thAy
ti6ng
"xet" trong
ddi. Hdy
chon
c6u
gidi
thich
dring trong
ntrirng c6u
gi6i
thich sau:
A. Do khi
b4t c6ng tic
diQn,
ddng
di6n
m4ch
ngodi t6c ddng.
B. Do khi
bgt
cdng tic
diQn,
diQn
trd
trong mach
gidm

dQt ngQt.
C. Do khi bAt cOng iic
diQn
ddng
diQn
qua
radi6
thay ddi dQt
ngQt.
D.
Do khi
b4t c6ng
tic diQn,
xu6t
hi6n
rnQt
"xung
s6ng". Xung s6ng ndy
t6c dQng vdo 6n$en
cira miiy thu
t4o
n6n
ti€ng
xgt trong m6y.
Cdu39:Ph6tbi0undosauddyvAdaodQngcu0ngbftcvdh€tudaodQngldkh6ngiIring?
A.
Chu ki cria hQ tg dao
dQng
ludn
bdng

chu ki
cria dao
dQng ri6ng
cta h6.
l. llC"
dQ
dao_dQng.cria
hQ
tg dao
dQng.kir6ng
php.thuQc
vis
bi6n d.Q
cria
h4ct6'c
dung l6n
h€.
C. Tdn s6
cira dao
dQng cuOng
btc
ludn
bdng
tdn sg
cria dao dQng ri6ng cira hg.
D. TAn s6 cria dao dQng
cuOng
birc
bing
tAn s6

cira-h;c cuOng
birc.
C6u
40: Chitiu
bfc
x4 c6 bu6c
s6ng
[
=
0,4pm
vdo catot cria
m6t.t6 bdo
quang
diQn. Cdng
thoiit
electron
cta
kim 1o4i lim
catot
ld A
=
2eV.
Tim
gia
trt hiQu
diQn
th€ ddt vAo
hai dAu
anot vA catot
Ce trigt ti6u

ddng
quang
Trang
4/6 - Ma
de thi 485
di€n.
Cho h=
6,625.10
iaJs
va c
- 3.108m/s.
leV
= i.6.10-reJ
A.Uer<<-
l,iv.
B.Ur.<
1,1V.
C.Uex
<
-
1,2V
D.Uex<-1,4V.
lI.
PHAN
RInnC
1
10
c6u)
Thi
sinh

chi
dugc
le* I
frong
2
phan
(
phin
A
hoEc
phan
B).
A.
Theo
chuung
trinh
chu6n
(
r* c6u
41
d6;
cf;u
50) ,
' '
:
-
'-
cau
4l:
ir46t

con
l6c
don
c6
khoi
luqng
2-009
dugc
kdo
lQch khdi vi trf
c6n
bing
mQt
g6c
600
rdi
bu6ng
nhe.
cho
g=lOml{,fUc
cdng
cyc rlai
vd
cpc
ti€u"cfra,"A,i
aa},tu,
A.3,5N;0,5N
B,4N;
tN
C.3N; lN

.D.5N;
t,5N
l
CAu 42
Mdt
rnach
di6n
xoay
chiAu
kh6ng
phan
nh6nh gdm:
diQn,trd
thuAn
R,
cuQn
dAy
thudn
c6m
L vi
g
diQn
f;Pjj ).T"tll i**i"
mqch
hiQu aien
iirt
'ouy
.r'ie,i.J
tan'so
'a

nicu
dle1.'
,i6
;tr'"
';il
d;;
aar.bi;e
:!.1 Lu^f"::
u:
nhiQt)
cir
diQn
trd
rdt
l6n,
lin
tufr
oo
hiQu diQn.thti
d hai
d6u
doan
mach,
hai d6u
tu diQn
vd
hai
dau
cu6n
day

thi
s6 chi
cria
v6n
kd hroirg
ulg
id
u,
uc, uL. Bict
u
=
uc= z.ur.'He
,b .i;il;Jr;;;il;
ld
:
A.
c.osp
=
1
4,8,27eY
B.
13,12eV,
C.5,00eV
cau
45:-IvloJ^v4t
phdt
ra tia
hdng
ngoai
'ao

m6i trucmg
xung quanh
phdi
c6
nhiet
do
B. cosd2
=
1
'2
t;
1iJ
L, CoSgl
=
-
z
D.
"or$,=&
CAU
43:
MQt
sqi
ddy
AB dai
100
cm c6
diu
gco
ainh
dAua

dao
dQng
di6u
hod
voi
tin
so 40
Hz.
V4n
t6c
truydn
s6ng
trdn
d6y
Ii v
=20mJs.
SO OiCm
nfit
vd
s6,li6m
b,,rng
s6ng
tr6n
Oaita
Uuo
*C"
ff.frGf,e^i,
n).
A.4
bung,5nrit.

B.4bung,3
nrit.
C.51png,4nrit.
D.2
b[ng,3
ntt.
Ciu 44:
Cdc
mric
nlng
lqgirg
trong
4giy0n
tt
Hydr6
duoc
xac
dfnh
theo
c6ng
thl?,
:/
=
-E{ry
6
=
1,2,3' ).Nguydn
tri
Hydr0
dalg

d trang
]h6i
cs
bdn
khi
b! kich
thich
s6
h6p
thlr ph6t6n
c6
nring
rodg,Ud"g
,
D.
i2,75eY
ndo
drrsi
ddy
lA
phucng
trinh
dao
dQng
cria
vgt
:
a-
a.r=
6"s{tT,

*il
,.*=
Oror?,
g.
*=
4in1?!,
n
|l
g.'*=
6sirt?Lt
C6u
4?:
Hdy chgn ph6t
biOu
dring
rrong
sO
nhnng ph6t
bi6u
sau
:
A.
Dao
ddng
cria
con
l6c
ld
xo
duoi

t6c
dung
cria
ngogi
luc tuAn
hoan
goi
ld
sg
qu
dao
d6ng,
.
.B'
Dao
dQng
tu
do
1d dao
ri6ng
c6
chu
ki
chi
phu
thuQc
vdo
c6c
ddc
tiJ

cria
n'e
mong prrpirruO.
vdo
c6c
y6u
t6
b€n
ngodi.
!.
chu
trci
dao
dQng
la
khodngrhoi
gian
ngln
,,llAt
ma vi
tri cria
vgt
lap
iai
nhu
cff.
D.
chu ki
ri6ng
cia

ccn
lic
ld xo
rj
l€ thu6n
voi
kh6i
lucmg
cria
vat
rang.
CAu
48:
Gio'i
han quang
dign
cria
cdc
kim
lo?i
nhu
b4c,
ddng,
kcT,
nh6m
nim
trong
lr:ng
birc
xg

nALo
?
A.
CA
ba rung
btc
xa d6
n,5i.
g.l.iah6ng
ngoAi.
C. Tia
hr ngoai.
D.
Axh
sang
rtin
tti6y.
-Ciu
49:
Dung
dfch
Fluor6xdin
h6p
thp 6nh
s6ng
c6
budc
s6ng
0,49pm
va

phat
ra
dnh
sang
c6
bu6c
s6ng
0,52pm.
nguoi
ta
gqi
hiQu
sudt.cria.
sr,r phrit quang
le
ti s6. gita
nang-tuqng
it*.1*s.nrr.Lluani
"a
nang
lffi
rinhsdnghdpthir.Bitithi-€usu6tcriasirph6i.?ri:,gcriadringdichiluorex€inliti5%.H6i
ris6(tinh
raph6n
trem)
9ya
ph6t6n
phrir quang
vA
s6 ph6

t6n
chi.iu
d6n
dung
dich
Ie :
A.
66,g%
B.
7 9,6%
c .
g2,7%
D.
7 5,0%
C6'u
46:
D6
thi
li
dd c,ria
mQt
v4t
cho
o hinh-vd
b6n,
phuong-uint
'-
*
CAu
50:

Mic
mdt
ddn
n6on
vdo
ngudn
di€n
xoay
chidu
cd
hiQu
diQn
th6
Ia
u
=22a
Ji
sin(l00zrt)V.
Edn
chi ph6t
s6ng
khi
hi0u
di6n
rhe dat
vdo
ddn
thoi mdn
he thric
Uu

>-
220f!
^lz
V.
KhoAng
thoi
gianddns6ng
trong
I chu
kj
A. tren
0oc.
C,
trdn
1000C.
id:
A.
At=.i-s
200
1
B.
At=
300
B, tr€n
Ood
D.
cao
hon
nhiQt
dQ

m6i
1
C.At=
1s
i50
I
D.At=
-
s
100
:'
Trang516
-
Me
dd
thi 485
B.
Theo
chuolg
trinh
nfrng
cao
(tir c6u
51
cl6n
cAu
60):
C6u
51:
HiQu

diQn
thii
gifta an6t
vd
cat6t
cria
6ng
Ronghen
le
3'i04V'
Cho
diQn
tich
electron
1,6.10-reC;
hing
s6,**ifrlr0'3aJs,
uan
to,
cfia
6nh
s6ng
trong
chAn
kh6ng
3'108m/s'
Bu6c
s6ng
nh6
"t'lirflf,liaRonehen

onff!ii,
,o"n,
c.
2,25.i0''m
D.4,r4.10'rrm
c'u
52:
c6ng
cin
trrict
aa
t6ch
mQt
electron
ra
kh6i
mot
kim
roai
rdm
cat6t
cfia
mot
tii
bdo
quang
diQn
ld2,'76eY
'
N6u

chi6u
l6n
b0
m*t
catdt
niy
mQt
birc
-?
te
fiu"i6;iJ:.di:fg
li
4'14ev
thi
ddng
quang
diQn
triet
ti.u
khi
aat
uao
gifra
aniit
vi
cat6t
cua
ttl
bdo
quang

diQn
mOt
htqu
6rqn
the
la
fi
-
) 42\
A.
-
1,83V
B 2,i4V
-
c'
-
1',38v
D'-2',42y
t
CAu
53:
MQt
vat
rin
quay
.fta*
aA"
dAu
quanh
mpt

trUc
9q
qi"h
1uy0n
qua v41
T+i
mOt
di6m
x6c
dinh
tr6n
v6t
c6ch
t4rc
quay mQt
n
o*g,
f
O
tni
dai
luqng
ndo
sau
dAy-kh6ngphgthudc
r
?
A.Vantdcddi.
B.Giat6crto*gii*.
-

b'CiuiOttieptuycn'
D'Vinti5cg6c'
Cdu
54:
MQr
con
lic
dori
gdm
mQt
qua
949
*O
Ue."g
kim.lo4i
:".$6i1"*g
10g'
diqn
tic!-q
=
2'10
7
C
treo
vio
sqr
ddy
mAnh
c6ch
diQn

khdng
dan
c6
khoi
lun"e-ff9"-e
a^"g,
fte
lCiu
tOt
qgng
til*gg
=-10m/s2)'
Khi
kh6ng
c6
diQn
rrumrg
chu
k!
d.g
;6.tgiltcfta
con
fi,
fair.
Daico.n
le"
u*11ong
dib""truhg
cl;u
E

= 104V/m
c6
phuong
iil"e
J*g
rto*g
*6og'
ii"
rl
a39
dQng
nh6
cta
con
l6c
trong
diQn
truoirg
ld
A.
1,01s
B'
0'99s
C'
1'98s
D' l'25s
cau
55:
C6ng
tho6t

cria
electron
aoi
voi
mot
kim
lo4i
li
2,3-eV'
H6y-cho
biet
n6u
chi6u
ldn
b0
mat
kim
lopi
niy
lan
luqt
hai
birc
"a
'o
ioo'
'o"g
li
l'1
=

0/5i'm
;ti'
=
ri'sor'*'
fay
cho
uiiit
utrc
x4
ndo
cd
khd
ndng
g6'y
ra
ftign
to*g
quang
diQn
AOi
vOi
kim
lo4i
niy?
e
^

L:a- r *^
A.
chi

c6
birc
"u
.o
ilot
totg
l'z
ia
conra
ning
gay ra
hiQn
tugng
quang
diQn'
'
g.
Ca
hui
birc
x4
tr€n
ddu
c6
th6
gay ra
hiQn
tugng
quang
diQn'

c'
chi
c6
birc
"a
tfi;;
song
ii6
c6
khd
ndng
gay ra
hign
tuqng
quang diQn'
U.
Ca
nui
birc
x4
tren
deu
kh6ng
the
gay
ra
hiQn
tuqng
quang
diQn'

CAu
56:
MQt
tra
dflc
c6
th6
quay xung.guanh
trUc
AO1
xung
di
g:
1e,rn
vd
vu6ng
g6c
voi mat
pheng
dia'
Dia
chiu
t5c
dung
cfia
m6t
m6men
h;c
kh6ng
d6i

M
=
oN,n.
Suu
ris
tc'tu
rirc
dTa
bit
dIu
quay
v6n
t5c
g6c cia
ilald}A
rad/s.
M6men
quan
tinh
cua
ffa
ld
2
n n r< r,
2
'"-i;,ffi;;-'
,*'"'"*
-
i'
i,so

t*'
c'
9'60
kgm2
D'
0'2s
kd*
CAu
5?:
Xet
he
thdng
nhu
hinh
v6:
Rdng
recld
met
"e$
ffi;
tlqi
ftatg
m'
b6n
T
kinh
R.
Hai
v{t
"ang

i,k*ifo*-g
M6,
Mel
KlOi
tuqng
tdng
cQng
14=14o+Ms*m
=
ffi
il;:ftt
van
tbttttu
rtO
v4t
ld2m/s
thi
dQng
ndng
cta
hQ
vit
ld
:
Fq
A.3,75kgm-D'l,rultBruv")vv"D '-@
r
5?:
Xdt
hQ

thdng
nhu
hi;
ue
ni"g
l9:].t,*ot
vinh
trdn
Uiqi
]rione
m'
b6n
-T
r
R.
Hai
vdt
ndng
kh6i
luqng
Me,
Ms'
KI6i
luomg
tdng
cOng
N4=\4o*\ils*m
=
&
. ffri

"-
tbttttu
ftO
v4t
ld2m/s
thi
dQng
ndng
cta
h0
v0t
ld
Fq
tit
3.ii
ffi,ara
lffirr*,l'ro-d*"
a-
|
cq,
st1 l-
Cdu
58:
Tinh
chAt
nio
sau
dAy
kh6ng-phf,i
cria

tia X:
,
-
^
*:^-

n.
io"
iJ"
kh6ng
khi.
B'
GAy
ra
hiQn
tusng
quang diQn'
C.
Xuy6n
qua
c6c
tAm
chi
diy
cd
cm'
D'
Tinh
d0m
xuydn

m4nh'
cau
59:
Mor
banh
".
;;;
q-u6n
tinh
eoi
voi
tryc
quay c6
ei*t
li
i2kgm2
quav ddu
voi
t6c
dQ
30vdng/phirt'
DQng
ndng
ctra
b6nh
xe
ld:
^
n
-

i o^ nr rl F.
=
??r
A.Ea=
5g,20J
B.Ea=
liL,ZZl
C'Ea=180'0J
D'Ea=236'81
cfiu
60:
Mot
xe
lua
ch4y
voi
t5c
do
6q
kq/h
rr€n
duhng
qu6c lQ
song
scng
vd s6t
cenh
duong
tdu
c6

I
6t6
ch4y
ilil
;rA":il;#;
120
km/h.
TAn
s6
tie"e
'ol
*
ittu.ao,neul
ieoi
tiong.
xe
6to
nghe
th6v
ld
fr khi
hai
xe
tirin
lai
gdn
nhau,
ra
r,
#rrri

ti6n
,u
*u"nr,r"l
Hay
finh
ti s6
i =
trrcr;cho
tdc
dQ
truy.n
dm
trong
kh6ng
khi
ld
340
mA
(D5p
s6
fay
OCn
+
s6
sau
dAu
phAy)
n
-

-
r r
-
A.
x=
0,9928;
B
. x=
A,744'7;
C" x:
1'3429;
D'
x =
1'1715;
Trang6/6
- Me
dA
thi
485
LID'T'
llL I

TRUONG
THPT
CHUYEN
,
NGUYEN
HUE
HA
EONC

HA NOI
-
Me
da rhi
r32
THI
T'i{u'D,a."I
Hqc
r
AN
TF{IJ
ri
nAnry
F{qc
2009_2010
nnOx
rHI:
vAr
Ly
7'hd'i
gian
ldnt
bdi;
90 phtir
(Hoc
sinlt
cht' duqc
lim
50
cdu

trong
60
cau
trdc
nghi€nt)
B.
No
=
2.l08ngLry€n
tu;
D.
No
=
l6.l
0snguy€n
tri
PHAN
I
<Phin
chung
cho
c,ric thi
sinh tir
cLu I ddn
cLi
40>
cAu
l:
Trong
c6c

thf nghi6m
sau ddy, thi
nghidrn
ndo c6
th€
do
bu'o.c
sone
dnh
sdns ?
A.
Thinghi€m
trin
sic dnh
shng cuaNiuto'n.
B. Thi
nghi€m
gio"tf.'Ju
uJi
[n rang.
c.
ThI
nghi€m
tdng
hqp
dnh s6ng
tring.
D.
Thi
ngt,lgr

"]c
ann
s6ng
don
,ir.
"-
cf;u 2:
.Khi
mdt
chirm
siing don
sic truydn
til
lchdng
khf
vao
thriy
tinh
thi:
1 I?r
sd tang,
bu6'c s6ng
giarn.
a. lin
.o
t
n5ng
doi,
uu.o.c
song gidm.

,c.
TAn
s6
giarn,
bu6'c
song
gidm.
D. Tin
s6
kh6ng
d6i,
bu.6.c
son!
tang.
Ciu
3:
Trong
thi nghi€m
giao
thoa
IAng
trong
khong
khi,
khodng
cdch gifr'a
hai
khe
ld
a,

khodng
cAch
$.2
l(he
t6'i rndn
ld
D' x
ld toa do
cua
mot.didrn
M tr€n
mdLn
so v6'i
v6n
trung
tAm.
Hi6u quang
h-inh
crja
hai
s6ng
rinh
s6ng
d6n
M ciuoc
xac dinh
binc bieu
thfr.c
njo?
A.dz-dr

=2axlD
B.dl-d1
=axlD
C.dz
-
dt
=
ax/2D
D.
d:
-
d,
:
aDlx
Ciu
4:
Trong
thf
nghi6m
IAng
ndng
lu.o-ng
6nh
s6ng:
A'
Van
du'o-c
bao toan,
nhu'ng
duo-c phan

pnoi
tai, phAn
bdt
o'chd
van
t6i
du.o-c
chuy6n
sang
cho
vdn
siing.
li 5l]9',g
duo-c
bdo
todn vi
ch5 vAn
toi vA.
ch5
vdn
siing
cong
lai
thrinh
b6ngt6i.
Cl
Kh6ng
duoc
bdo
todn

vi
ch5
ciic vdn
t6i
mEt pnin
ndng
luong
iinh
s6ng
u"1
,dt
do
nhi6Lr
xa.
D.
Khdng
drlo-c
bio toin,
vi
vAn.sdng
lai
nhidu
hon
so voitni
ktiong
co
giao'ttroa
CAu
5:
OOi

vOi
doan
mach
di€n
rnic
th-eo
so
do
o.hinh
R.
L.r
v0
thi
cong
thri'c
ndo
du'o'i
d6y
ld
dring:
,f*-a-aT; *i$li$trftff:1,.1'!-l
l-
-=
j\ rl
ts
A.
Cdng
sudt
tiOu
thu

trung
binh
o 6ng
dAy
di€n
tro.
ld
p,
=
U
irN
.
r
B.
Cdng
suAt
ti€u
thu
trung
binh
o.todn
b0
doan
mach
pn:
p
=
Ulr!
C.
C6ng

sLrdt
tidu
thr] rrung
binh
o
rLr
di€n
p.=
2n.f.C.
Ui,r
.
R +
r
D.
Cong
su6t
tieu
rhu
rrung
binh
o.di€n
tro le
pR:
-qit
R
ciu
6:
Trong
rn6t
ngu6n ph6ng

*a
i3P
c6
108
nguy€n
ru'v6.i
chu
ki
bdn
r5
T:
l4
ngdy.
B6n
tuan
16
rru6.c
d6
sd
rrguy€n
rri'
i1P
rrong
ngu6n
do
bing
bao
nhi6u?
A.
Nn

:2,5.i
OTnguydn
tu'.
C.
Nn
= 4.l0snguy€n
tLr
clu
7:
t{at
nhan
t;juo,l'ng
ydn
phan
rd
theo phu'orrg
trinh
2lf
Ll
-+cr
+2x.Bi6t
o6ng
nrng
cria
hat
nhdn
con
')x
ta:,4'10-2Mev,
d6ng

ndng
cia
hat
o
ld (ldy
khdi
lLrong
ciic
har
nhdn
rheo
don
vi
u
bing
kh6i
s6
cira
chIng)
A.2,22MeY
B.0,B9MeV
C.
4,42Mey
D.7,2.10-2MeV
tlll
ilr[!',ffL'.ll:?tuo'
ns
giao
thoa
s6ng

nu'6'c
vo'i
hai
ngudn
k.it
hop
"**n"
on,
slvir
52,
nhfrng
di6m
nim
A'
Dao
d6ng
v6'i
bi€n
d6
bd nhdt.
B.
E[.pg
y€n,
kh6ng
dao
d6ng.
c'
Dao
ddng
vo'i

bi6n
dd
l6'n
nhat'
o.
nao-oong
v6'i
bi€n
do
c6
g,iri
rri
r*rng
binh.
cf;u
9:
Lang
l<inh
thdrv
tinh g6c
chi6t
qTlgj
-
50
1dLro.'c.ri
ra
,rho
;;
.i!,1u,
vo.i

dnh
siing
do
vd
dnh
sdrrg
tim
lin
lL'ot
ld
n6:
1,643
vitn,
= t'b8s.
cho'dr.r-',lr
tia
sang
tring,
hgp
roi
gan
vLr6ng
g6c
vdo
mdr
ben
cua
lang
l<inri.
Tinh

goc
iao
ho'i
tia
do vA
tia
tim
trong
qrrlr'|,nu
tao
oo.i
Iang
kinh.?
A.0,2lt'
8.0.2-io
i.0,5n-'
'
D.
lo
f
cau l0: cho
nrach
di€n
RLC
noi
t;ep.
cu6n
ddy
thLrdn
cdm

c6
d6
tu
cam
L
=
di€n c6 di€n
dLrng
c=
1a-4Dx (F).
Hi€u
di0n
thd
dar
vdo hai dar.r
rJoan
mach
la
cuoltg
do dong
c1i€r-r
clray,
ti-orig
rlach
ld:
A.
i
=.,,6cosl00nt(A)
C.i=J7.or(loont-fXnl
lin (H),

di0n
iro'
R
:
l00Jjf
;, ,,.i
Lr
=
200Jfcosl00nt(V)
. Bi€tr
i!.r,rc
cau l1:
Ngu'd'i
ta
dr)ng chirm
hat
a
bin phd
l6n
hat
nhan
f
Be.
Do
k6t qLra
c0a
phdn
Lrng
hat
nhan

dd
xuAi
tiir:;r
notron
tu'do.
SAn
phAm
thri
hai
crla
phin
u.ng
ld
gi?
A. D6ng
vi
borlB
C. Caebon
'JC
t
L
B.
i
=.,6.ot(l00nt
*lXe;
o
D-
i
=.,6"or(l
oonr

-
*lfnl
B.
Dong
vi
cacbon
';C
D.
Eong
vi
Ber
ili
j
Be
ciu I2: M6t
mach
1:: ::l,g
glm
rnQt
tir
ciidn
c6
di€n
rlung
c
vii
cuon
cdin
c6
do

tu
cdm
L,
di6n
rro.rhudr,
ru,
T.q"h,b:"q.\ltul.q
Bitit
bicLrtlru'c
dong
didn'trong
rnach
ld-i
= o.rbtt"rtz.loii^l
Cho
dd
ru.cam
L.:
lrt,rli
Bi,€u
thu'c
hi6u
didn
rh6 giDa
hai
ban
iu co
dang
nhu
the

ndoZ
A. u
:
80cos(2.l0?txv)
B.
i;
=
ggcos(2.I
07
r
+
nlZ)(V)
C.
u
=
I0-8cos(2.
tO?t;1V;
D. L,
= l0'*cos(,2 lai
,
-
"b>fi>
;,::ii;rnilTr::t
hao
phi
do
toa
nhi6t
tr€n
ciu'ong

dav
khi
cdn
tii
dien;i"u.
r,.on*
rhuc
re,
c6 th6
cr'r),r;i
A'
Giam
hi6u
didn
th6
m6;'ph6i
di€n
n iin
d€ giam
cu'o'ng
do
dong
dien
ir.€n
da1,
n lin,
gidm
c6ng
suat
tc,n

nhi€t
xudng
n2 lAn.
B'
Tang
hi€u
di€n
th6
o'no'i
sAn xuit
di€n
l€n
n
lAn
dd
giam
hao
phido
t6a
nhi€t
tr€n
du.o.ng
cldy
n2
lAn.
C. Ding
ddy
dAn
bing
v.Qt

ti€u
si€u
dAn
ctu.o.ng
kfnh
lo.i.
D'
XAy
du'ng
nhd
may
gAn
no'itiOu
thu
di6n
ddgidrn
chi€u
ddi
du.d.ng
ddy
truyAn
trii
di€n.
CAu
l4:
Co
so'hoat
ddng
cua
nriiy

Uien
rne
ta
giZ
A.
Cdm frng
cli€n
tir.
c.
Hidn
tu'o-ng
tu'tr'6
ts'
cdng
hu'o'ng
die
n tu'
cdu
l5:
cho
lnach
diQn
nhL'hinh
vd,
di6n^dp
gat
rl;?lTu:|,*J;
rnqch
co
giri

tri
hi€Lr
dLrng
vd
tan
s6
kh,,,ig
ddi'
cu6n
day
thuin
cain'dQ
tu'cdm
cira
cudriddy
va
di€n
rrd'thuan
cria
mach,
ampek6.ry
tu.6.ng,
ty
di€n
co
diLjn
dung
c bi6n
thi€n'
rcni

oieu
chinh
di€n
clung
to'i
gia
tri
c6
thi
uax
va
uas
vu6ng
pha.
Di€Lr
chinh
c
>
c6 rhi:
t Bfl
;i
rfl
::ri
H:
il
:iil
ll;
*:lr
ill*:
ff}

D.
Di6n
dp
hi€u
dung
rr6n
ru
di6n
Ung,
s6 chi
arnpek€
giar;
cf,u
16:
Trong
ciic
c6ng
thirc
sau,
i:6ng
ihri'c
nao
ld
cdng
thri'c
Anhxtanlr
v€
hi6n
tu.ong
quang

di€n:
A.
hr
=.2A+g- B.
hr=rrr
IC'*
c.hr=A*
''y'{,,,s^_
;;;:A_I"j*.
l#',,t^t'"n?,iil':1"'ilri,li'lrfruot'on
t.ong
c6c
lo phan
'ing
no1
ur,a,,
ra
do
kijt
qui
va
1nu,n
.ou
chrrng
i,iii
A'
cric
nguy€n
td
nang

].ir;
tf
u
y€Lr
notron.
B.
cac
nguy€n
to
nhe
hdp
thLr
manh
notron.
c'
cdc
nguy€n
t6
ndng
hdp
thtr
inanh
no'tron.
D.
cdc
nlLry€n
t6
nhe
hApthu
y6,r

norron.
{liu
l8:
Mdt
day
AB
ddi
90crn
co
dau
B
tha
tu
clc.
J'ao
o'ddu
A
r,Qt
dao
cidng
di€Lr
hod
ngang
co
t6n
s6
r00rri:
ta
c6
song

di'ng'
tr'€n
dfiy
cti
4
rnfri
nguyen.
ven to.
rri,yeniong,,en
cl6y
co gid
tri
bao
nhicu?
A.
40
nrls
B.
60
nrls
C.
jO,7,
D.
20
mis
cau
19:
Trong
m6t
6ng

Ronghen'
van
toc
cua
electron
lthi
td'i
anotld
5c000knrA.
D6
giani
.vdn
r6c
niiy
:[:::Ti:
jlili
l;lrJ]i:'=*;:i
ii:
[:
aa '
o"g"uuo
'i
ii''
*,"
hid;;;ii"
uie-
rich
;;
kh6i'ruo,,g
.,,u

A.
AU
= 2100V
B.
AU
= 2000v
C.
AU
=
I
g00V
D.
AU
=
69.i2y
c;iu
20:
chon
ktit
luan
drirng
v€
ning
luo-ng
dao
do'g
cria
m4ch
r,c;_o:
rd

tan
s6
goc
cira
dao
d6ng,
e6
ri
didr:
tfch
ban
diu
cua
tu
di€n
,u,
khi
auo"Ii"n
eiE,t
c,
rltie',
or'r*'r.,"
ru
ciin,
L re
do
ii'
carn
cta
cu,5n

d6v
A.Nangluongdi€ntru'o'ngciratudi6ntai
rn6i
thdi
ditinrtdu'octinhbdi:
ry
=-$.r'n,"r.
2C
B' Nin-q lLlo-ng
tt)'truong
cta
curin
canr
iai
,'n6i
tho'i
tji6nr
t
duo-c
tinh
bo.i:
y/,
=
Lcl.(l;cos,ort.
C' Tai nroi
thoi
di€m
tong
rrSng
Iuong

di€n
tru'ong
vd
rrSn-9
lu'o.'ng
tu tru.ong
trong.rnach
dao
d6ng
id
khiing
eoi.
t'tang
lu'o-ng
cta
mach
dao
ao'ng
duo.c
bdo
toirr
ia.o
oo
lo.n:
w:
w6
+
w,:
esr/LC.
D'

Kh!
cu6n
cdm
c6
di€n
tro'ddng
k€
thi
mot
phAn
ndng
ioqng
b,un
oa,
ul .irrva]-''r,,J",hdnh
nhi€t
ndng
n6n
dao
dong
tit
din,
c6
bi€'
do gizirn
din
theo
tt".,oi
gian.
"o

'svIrE
L'qtr
uau
ur L'rru'
cau2t:
I\4achclrons6ngg6nrcudncamcoddtu'cirnL=l,5mH
vatlr
dienxoaycodidndungcbi€nthi€ntu
50pF
ddn
450pF.
ir'aach
nay
co
thd
thu
du'o-c
ciic
,ong
iie,.'
ti.c6
bu.d.c
song
rrong
khoang
ndo?
A.
5,61
rn
ddn

I 5,48rn
B.
56,1
p
d€n
I 54,gm
C. 0,561rn
d6n
1
.548rn
D.
_5I
6m
Oe,,r
f S+drn.
Cfru21:
Chorr
cdu
SAI:
A'
Tri tru'o'ng
bi€n
thi€n
theo
thd'i gian
s6
ldm
ph6t
sinh
xung

quanh
no
mdt
di€n
trLrong
xoily
ngay
cd
khi
tai
d6
khdng
co
ddy
ddn
kfn.
B'
Di6n
truo'ng
xoiy
xuat
hi6n gifr'a
hai
bdn
tu
cli€n
l<hi
rai.d6
c6
tii

truong
bi6n
thi6n.
Didn
tru.d.ng
xoay
gi[.a
hai
b6n
tir
didn
ndy
c6
ciic
du'o'ng
sf c
song
song'ciich
aeu
va
kh6ng
khdp
ki;
-
-
c'
Khi
dien
truong
gifra

hai
bin tu
bi€n
thi€ir
diiu
hda
theo
tin
so
f
thi
gi['a
hai
biin
ru
xudt
hi€n
m6t
tD.
tru'd'ng
xody
voi
cdc
duong
cdm
ri'rrg
tu'khdp
kin
hinh
trdn

co
"r'rie,-,
Lie"
trrji"-rrr""
ran
s6
f.
D'
Ei€n
truo'ng
xo6y
c6
cdc
dud'ng
sric khep
kfn
bao quanh
cdc
duo'ng
cam
ri.ng
cua
t1,.tru.ong
bi6n
thidn.
Cdu 23:
Tirn
cALr
trA
lo'i

dring
trbng
s6 ciic
c6u
du.oi
dAv:
A'
Mdv
nh6t di€rr
3
pha
co
2
phAn:
PhAn
In-e g6in
3 cu6n
ddy
gidng
nhau
(hay
3
cdp
cudn
d6y)
dat
l€ch
nhau
tzo0
trenloi

,atqrrutoi"a
prra,
i",
*a",
loir,7>,
,,,ii*
*;'.u.
rir.quay
tron
ddu
(roro).
B'
Khi
3
'ach
ti€Lr
tlru
di€n
gi6ng
h€t
nhau
ttri
:aong
aien
ruo
boi
rnay
phat
Ji6n
3

pha
la
3 ddng
di€n
xoay
chidLr
cti
dang:
i1
:
I'cos(Dt;
ir.=
lecosiot
+
Izoo);
;;:,;;t(,:r
-
1200),
trong
do
co c6
don
vi
ld
radls.
c'
Ddng
di6n
3 pha
ld

he
th6ng
dong
di-6n
*oay
ctiiAu
iao
b6'i
:
rnay
pnai
o]cn
,ot pha
ri€ng
bi€t.
,,,'"1;!l'
chua
n6i
vd'i
c6c
nrach
iieu
t[u
aien
thi"3
r;;;;'e;
d6ng
tao
uoi
,a/fr,at

di€n
3
pha
gidng
nhau
v6
c6u
24:
Con
lic
ld
xo
treo
d' trAn
m6t
xe
ldn,
dang
thqc
hi€n
dao
d6ng
dieu
hod.
cho
xe
l'n
chuy6n
d6ng
xu6ng

rn6t
d6c
nhin,.nghi6rg
g6c
cr
so
v6i phuong
ngang,
b6
qua
moi
lu.c
can
thi:
.
A.
con
ldc
tharn
gia
aong
tr i.vito
2
dao
ct6ng.
o'
-
J
euq
rrrur

rr'ru
oan
Inl:
B'
chu
kj'kh6ng
doi,
ve
con
I6c
dao
dQng
in"o
pt,u.o.ng
thing
drmg.
c'
chu
ki'
kh6ng
d6i,
va
con
I6c
dao
dQn!
theo
phu'on!
nghieng
gic

zaso
voi
phu.ong
thing
dung.
D'
chu
kj'rrh6ng
ooi,
va
con
ric
dao
d6ng
theo
phuo.ng
"io"g
gi.
;d;;#
;;:
c6u
25:
Con
lic
do.n
treo
o'tran
m6t
thang
T1{,

d.1ng
dao
d6ng
dieu
hod.
Khi
con
l'c
v€
dung
rr5.i
vi
tri
c6n
bing
thithaig
rndy
uft
oiu
"rrrtd;r;o;g
nhanh
ddn
d€u
ran
rr€n
rhi: ,
"on
ldc
v€
dung

tr5'i
,.
A.
Bidn
dd
dao
d6ng girirn.
c.
Lu'c
cang
ddy
giarn.
D.
B;;
Ji
ouo
d6ng
rdng.
ffloT;",:;:t*if
;:,TH
ff?r?i;l
noi
riep
voi
nrrau,
r6i
,nic
"r"
*0,
v6t

d€
rao
rhanh
h€
dao
d6ng
thi
A.
Chu
kj,giarn
2
lin.
C.
chu
ki,tang
vt
lAn.
B'
chu
kj' giam
"5
lin'
D.
Chu
kj,kh6ng
thay
d6i.
CAu27:
M6t
di€n

cuc
phing
bing
kinr.lo4i
c6 gioi
han
qrlng,.diqn
Lo
= 0,332pm,
du.o-c
roi
b6.i
l:ic
xq
2.=
0,083prn.
Vdn
t(jc
ban
dAu
crc
dai
cija.r"_ ,::iiJn
quang
lien
la.uo,"n_.
Cia.s,il-ti-'i
roi
khdi
rim

kinr
loai,
cdc
;i}:ffili.ngav
rn6t
di€n
truong
cdn
E
= 7s}vtn.d[.i'".r;;
r[e
'ti-*a",,
i,,],
,"u,
rn6t
khoing
r.
hdy
chon
A.Vc,,,u*
:6,28.108cni/s;
l=
l.5crn.
g. uo,n"*
=2,2g 1
07cm/s;l=
l,5mm.
C.
von'n.*
=2.

l06cnt/s;
l:
l,5cln.
;.,il_
=2.10".,r.,/r;l=
3,5cni.
.'J{;1,i$ii:ff1i,;1fflj1-,ilT,H'"':;::ln*r*ri;;g;"='0,,,
phuong
,rinh
dao
ddng
A.
x
=5cos(4nt
-
n/3)(cnr).
B.
x
=
5cos(4
nt_
n/6)(cm).
.
C.
x=
5cos(2nt
+
5nl6Xcrn)
D.
x=

Scos(nt+n/6)(cm).
ciu
29:
Mdr
rthe
S
phrit
ra
6nrr
s6ng
don,^i::o
bu.oc
s6ng
l
I
o,:uT
chi6u
d6n
hai
krie
rang
s1,
Sz
vd.i
srsu
=
0'5tntn'
N4at
phdng
chrl'a

SrS2.
cdch
ri.,an
rnot
khoang
o
=
t"m.
Nguon
s
ra
,rd.
k];;'nlp,
nro.r6ng
din
khe
S.
Tfnh
dd
rong
16i
thieu
cua
l<he
S de
he
van
uien
m6i.;j6;;.
, ci."ilSrS:

rnor
khodrrg
d
=
-igcnr.
A.
3nrnr'
B.
5rirn.,
C.
0.3mnr
n n ._
Ciu
30:
Phdt
bidrr
ndo
sau
da,v
la
sAI
khin6i
v€
d6ng
ndng
ban
diu
cu.c
dai
cia

cdc
electro'
quang
didn
,,,.fi,',",,ii-*
ndng
ban
dA,
cuc
dai
cda
cdc
electror',
q,iung
ole"
i.rro,rg
C;;r6"
;
cu,o.ng
do
c,ia
chirn
s6ng
ii'
D6ng
ning
ban
diLr
cuc
tJai

cua
cdc
electron
quang
di€n
phu
tliudc
vdo
bu'6'c
song
cua
anlr
sdng
kfch
thich.
ar[;
o'ont
nrng
ban
diu
cu'c
o'ai
crla
cdc
electron
qruni
iign
Lr,ong
phLr
thu6c

uao
uan
ch6t
kim
loai
ding
ldrn
D'
EQng
nang
ban
diu
cu'c
dai
crla
cdc
electron
quang
di€n
phu
thu6c
vdo
bdn
chAt
kirn
loai
dung
lam
cat6t
CduJl:

Khiginqudnangrnlvaom6rlo.xo,no.dao.aO"sv6i'chuk)r;,
=;;r.;;,
ginquandngm2vdoloxo
;l;
l'"
d6ng
vu'i
chu
ki'
T:
=
1,6s.
H6i
khi
g5n
d6ng
thdi
tui qua
n{ng
m1,
mz vao
lo
xo
thi
n6
dao
d6ng
v6i
chu
A.

T:
2,8s
B.
T
= 2s
c. T
= 4s
D.
T
=
1,45s.
,TJil;,"
la
s0
electron
bi
but
ra
khoi
catot
cDa
mot
dong
orun*
aicn
tronimolgidy
khi
dong
di€n
bdo

hoa
td
A.N=1,25.
l0rs
B.N=1,25.
l0r4
C.N:1.25.
l0r3
D.N=
l,Z5:1A,2
cau
33:
Trong
thdp'
scing
dm
lan
truf
ip
voi
van
t6c
5000rn/s.
N6u
hai
di€m gdn
nhdt.
,u,
uu.u"
pha

cria
s6ng
l<h6c
nhau
nrot
goc
nl2.
cacl't
nhau
nrdt
khoang
bing
rnr,
rhi
tAn
rJ.o"lur*';;"#r;
bao
ntri€u?
A.250A
Hz
B.
5000
Hz
C.
I 250
Hz.
D.
104
Hz
;1|i},

,9;::Jir?::
rd cita
rn6t
dong
vi phong
xa
ld
r.
rai
thd'i
didm
ban
diu
rniu
.nou
*.
nguyen
rr,.
Sau
rhoi
A.
Con lai25Yo
sd
hat
nhAn
No
C.
Con
lai
12,5%

s6
hat
nhdn
.lrj,,
Cdu
35:
Cho
nrach
di€n
nhu
hinh
ve.
B.
Ea
b!ph6n
rd25yo
s6
hat
nhAn
No
D.
EA
bi
phan
1611,5o/o
s6
hat
nhdn,Nn
C
Biet

u
=
40J2cosl
}Anre).
Vdn
kti
Vl
chi
20V.
v6n
k6 Vz
ch
i
20.,6
V
vd
am
pekd
ch
i I
A
vd
Z,
=
2Zc.
EiQl
tro'thuAn
vd
dung
lchdng

cia
tu
C co giri
tri
Uao
nhi6r,r?
iAr
l"*" _ __*"
A
A.R=
I0'[O;C=
l0'3/nF
c.R=20e:c
=10-3lnF
B'R=10"6o;c=10'3/2nF
D.
R
=
20.6ei
;
C
=
I
0-3l2nF
a-u,
].u^,
chidLr
dai
con
ric

don
r=
rnr.
phia
du.6.i
di6rn
tr.eo
o
tr6n
ohu.cms th;no
v do
ri
6
m
o
;
;il;
:;#d;,
;
;.i
r
:
ffi,
l'J"':il
ii:H{
!T.?
l;n:
Jiil:
J:H
;"'';[;i

;.=,j
I
idH
:
nhe'
Bd qua
ma
sdt.
Bi6n
dQ
dao
dgng
o
hai
ben"i1rt"i,r-uarl
,u,
rt.
A'
:5.23rnm;
42
=
3,73mm-
B.
Ar
= S2,:cm;
A2:37,3cn.
C.
A,
:5,23cm:
Az

=
3.73cnr.
;:;;
= ,ir"*,
Az:3,37cm.
Cdu
37:
Chon
d6p
an
dung:
phdn
ring
t6ng
ho.
p
ciic
hat
nh'n
nhe
xAy
ra
A.
Tai
nhi€t
d6
cao.
;;";':;,i.'lli,r^'"
c.
rai

;i;;il
,.i,
"uo.
B'
rai
nhiQt
ciQthdp'
'
D.
Du'oi
iip
sudt
,6t
oo.
CA.u
38:
C6rg
llrilc
ndo
sau
d6y
di6n
ra
dfng
vo.i
may
bicn
ri-3
kh6ng
bi

hao
r6n
ndng
luo.ng
(ti
s6
truy.n
bi6n
rhe):
A lz=l!
s.!r_-lr_
c.}=r.
D.!a=1_
I'
U,
"'
Ur-
n,
"'
l,
-
n,
Ur
n?
c6u
39:
Trong
hien
tuong
giao

thoa
s6ng
tr€n-mdt
chdt
rdng
vdi
hai
ngu6n
o1
vd
02
co
cing
phu.ong
trinh
dao
5l!i:
+x;T;:Iil:
53:;xllglrg;-";:
r50
;"
;;;;;'
',,;t;
';;;
;;
,*,
.nd,
,dng
,d
v

= i'cm,s
s6
A.
g.
B.
5,
c.
3,
D.
7,
Ciu
40:
Trong
miiy
ph6t
di6n:
A.
phAn
cdrn
ld
b9 ph{n
drlng,y€n.
phin,
ri.ng
ld
bo
phdn
chuydn
d6ng.
B'

Phan
cdrn
rd
ro.ptran
.rrrve"lo,ig,
onun
on*
rd
b6
ph6n
i*i.ng
y€n.
ui,,;f;,oi,'X;:l'ili:t;An':"g
'oir,ii,rl'g
drrngl€n,
r'oa rne;;td,
d6ng,
nhune
b0 g6p
di6n
thi
nh6t
.,,;6]::j!u0c
cdu
tao
cila
rn6v'
phan
cdm
cfrng

nhu'pharr
f'ng
c6
tne
ta
uo
phdn
dri.ng
y6n
hodc
ld
b6 phan
PT{AN
II
.ptrir'tno
thi
sinh
theo
chu'ottg
trinh
co'btin
tir
cftu
41 dan
cftu
50>
C6u
41: I(hi
vE
do

rhi sLr.pliu
thr-roc
vdo bien
rJd cLra
van
rdc cr-tc
!"1cia
m6t
vat
dao
d6rrg
diiu
hod thl
d6
thi
sE
ld:
C6i,_42:
Khi
chi6Lr
lan
luot
vao
c.aiot
cira
mdt
t6
bao
quang
di€n hai bfrc

xa
co
bu'o'c
song
ld L1 =
0,48pLni
vd 7'z
= 0,374prn
thi
th6y
vdn
tdc
ban
ddu
cuc
dai c0acac
etectron
qLrang
di€n
tuong
trng
ld
vs1 v?l
\'02
=
i,5v61'
Cong
thodt
electron
cfta

l<irn
loai
ldnr
catot
ld
:
i.
q,:s
io're
J
B.
3,2o.l
o'rs
J
Cdu
4J: MQt
ddng
di6n
xoay
clri0u
c6
cud'iig
d6
tilc
tho'i
:
i
=
4cosl00nt
(A) di

qua
mdt diOn
tro'R
=
5O. Nhiot
lu'o-ng
toA ra o
di0n
tro'R
trong
tho'i
gian
7
phtit ld:
A. 33600J
B.
16800J
c.
1680J
Ciu
44: EiiLr
ndo
saLr
dAy
ld
SAI
khinoi
u'e OO
tni c-'ia
s6ng?

A.
Du.d.ng
hirrh
sin
thc,i
gian cia
rndt
di€rn
ld
d6 thi
dao
d6ng
cira didm
d6.
B.
D6
thidao
d6ng
cila
mdt
di€rn
tr€n
ciAy
ld mQt
drlong
sin
c6 cung
chu ki
T vo'i ngr-]ql.
,

C.
Dudng
hinh'sirikh6ng
gian viro
rnOt
thoidi€m
bi6u
ihi dang.cia
rnditru'o'ng
vdo'tho'idi0m
do.
D. Du.onI
hlnh
sin
khO'!
!ian
cO
chLr
ki 6ing
chu ki T
cira ng,6n.
Cdu
45: Tao
song
ngang
tr€n
rnot
dd,v dirn
nOi Ox.
lvlot

di6rn
N'I
crich nguon
phdt
s6ng O
mot
khoAng d
:
5Ocm
/
r\
^
:
co
phuong
trinlr
da6
dong
Lrpa
=
fcos
ll
,-
-r-
|
crn,
r'iin
tdc truy€n song tr€n
dAy
lA

l0m/s.
Phuong
trinh
dao
2[
20)
ddng
cua nguon
O
lA:
A.
un
:
zcos(
',
-
rL)
\2
20)
/-
-\
C'Lro=Zsinl"
1-"-|
l-2'
20)
Ciu
46: Mor
mach
dao
dong

gdm
m6t
cu6n cAm
co hQ sd tu'cAm
L vd m'6t tu di-€n
c6 di6n dung
C
thuc hi6n
dao
ddng tu
do lchdng
tit. Cia
tri cUc
dai crha
hi€u
di6n thd
gifi'a
hai bdn tu
di€n
bing U,nu*.
Gid
tri
cuc dai cria
cu'd'ng dd ddng
di6n
trong
mach
ldL:
A. I*.* =
U'.u*Jlc

B.
I,r,u*: U**
n[
c. l,r,u* - u*
,E
D. I.,*:lJ^u*IJIC
Ci,u47: MQt
vAt
nho
lchtii
lu'ong
m
=
40g,
cltioc treo
vdo
mdt lo
xo
co khdi lu'o-ng khdng
ddng.k0, dgcfLng
k =
40Nim. Dua
vdt l€n
t6'i
vi tri
lo xo khdng
b'i€n
dang rdi thd nhe nhdng d€ vAt dao d6ng. Chon
g6c
toa

dd ld vi
tri
cAn bing,
chidu du'ong
hu6'ng
xuOng.
g6c
thoi
gian
ld tfic
v:l1-bat-dAu d4-q-
d,O-ne.
Bd
qua
moi lu'c cdn, cho
g
=
'2
=
l0m/s2. Phuong
trinh
dao
clong
cua vdt
s€ ld:
A.
rrr6t dudng
cong
l<h6c-
C.

du'o'ng
th[ng
di
qua
gOc toa
d6.
A. x
=-l0coslOnt
(nrrn)
.
C. x
=
l0cos(5nt+l;
lmrn;.
'
2.
B.
dr"roirg
elip.
D.
dudng
parabol.
C.
l,72.eY
D.2.0eV
D.8401
B. uu: Zcoslt
2
D.uo:lsinaf,-I)
2\

20)
,
B. x = l0cos(5nt)
(mm).
D. x
=
5cos(lOrt
-f1
(mnr).
2"
Ciu
48:
Quang
ph6 vach
cua rndt
chit
khi lo6ng
c6
s6 luo-ng vach
vd.
vi
trf c6c vach:
A.Phu
thuoc
vdo nhiet
d0.
B.
Phu thuoc vdo
6p sLrAt.
C. Phu

thudc
vdo c6ch lcich
thich
(bang
nhi6t hay bdng
di€n ).
D. Chi
phu
thudc
vdo bdn
chAt cira chA! khi.
Cdu
49:
MOt
ddng di€n xoay
chidu
i = l6coscot
Qua
rn6t
doan
mach.
Gi['a
hai
dAu doan
mach c6
mdt hi€u di0n
th6
u = Uscos(ot
+
rp). Cong suAt trung binh

ti6u
thu tr€n
doan
mach co thd tfnh theo
bitiu
thrl'c:
A. P = U6lscos<p.
6 p
=
Uolo
2
CAu
50:
'fai
tho'i
didm
tr do
phong
xa
cua
m-at
rniu ch6t
ld
x,
o'tho'i
giarr
i2
ld
v
. Ntiu chLr

ki
ban rE cua
nr5u ld
T
thi
sd irat
phan
rd trong khoing
tho-i
gian
t:
-
tr lir
rI I
iJ.
p=
"0.0
cOSe.
,,
.'l
,
:
D. Co tlr€
P
= Ul/2
tLrj, theo
cdu
tao
cira mach
A.(x-1,)ln2lT B. xt1

-
1,t2
c.x*y
D.{
x
-y
)Tlin2
f
PE{AN
TII
<
Fhd:n
cho thi.sinh
thio
chu'nng
rrinh
niing
cart
tb cfrtt
5I d6n ci,u
6{}>
Ciu
51:
N'i6t dia ddc, dong
chAt,
khdi lu'orrg
l0,0kg,
b6n kfnh
1,00m quay
v6'i v6n

t6c g6c
ro:7,00rad/s
qLranh
trLrc
thing
dri'ng,
di
qua
tAnr cua
n6.
N4dt
cuc
ma
ti;, khoi
luong
0,25dkg;
,o.i
tt.'ing
dLrng
vdo
dTa
tai
,ot'JiJ*
c6ch
truc
quay'0,900nr
vd dinh vdo
d6. Vdn
tOc
g6c

cuoicLra
h6:
A.
cD
=
3,76radls
B.
co
= l,36radls
C.
c,:
= 3,67rad/s
D.
o)
= 6,73radls
CAu
52:
Mdt
hat
proton
cir
kheri
lugng
nghi
nr6
:1,67.|0'ttkg.Nang
lu'orrg
toAn
phin
E

=
3E6
thi
v6n
t6c vd
dong
ning
cua
hat
proton
bdng bao
nhi€u?
Chon d6p
iin
6n
dring.
Ciu
53:^
f{gt
rndv
bay
phdn
l.uc
si€u
thanh
bay voi vAn
t6c
v
= 15001<m/h
vd phfa

m6t
ngu6n
dm
c6 dinh
S.
Ngu6n
S
phdt
mot am
d.on co
tAn
so
ft
=
l000t{z.
Tin s6
I cira
dm nrd
mdt
m6y
thu
aat
iren"mav
iuv
"ian
ouo
cua
S l0c
rndy
bay

lai
gin
ld:
A. l=2226H2
B.f
:ZZAOflz
C.
l=
2662H2
D.f
=2Z62Hz
Cdu
54: Hai
dTa cci
o
trtrc
dLroc lip
vdo
cirng
mdt
truc.
DTa
thii'
nhAt
co
rnomen
quiin
tinh
3,3kg.m2,
duo-c

ldrn
quay
vo'i
t6c clo
4-50
vong/phLrt.
DTa.tht.haic6
momen
qudn
tinh
6,dk;.;f
lutc
larn
qr;t;;i
iO"
OO
qOO
Vdng/phirt
cung
chi€Lr
voi
dia
thir nlrAt.
Sau
d6
cho
chring ghdp
sat
ntrau?e.l;;g
qLray

nhu
m6t
dia.
Hoi
vdn
tdc
goc
saLr l<hi
ghep
bing:
)
1-'-r
A.
800 vong/ phut.
B. 850
vong/ phrit.
c.7a0
voirgi
phut.
D.
750
vong
/ phfrt.
Cdu
55: M6t chat nh6t
quang
c6
l<hd
ndng ph6t
ra 6nh

sdng
mAu
vang
luc
khi
duoc
kich-thich
phat
sdng.
Hoi
khi
,,i I r
chi€Lr
vdo
cli6t
do
anh
sirng
don
sic ndo
du'6'i
d6y
thi
cn6t
ao
s€
ph6t
quang?
A.
Luc.

B. Vdng.
C. Da
cam.
D.
Dd.
Cdu
56:
M6t cLr6n
dAy
det hinh
chfr'nh6t
didn
tich
54cm2
co
500
vong
dAy quay
dAu
vo.i
v6n
t6c
50
(vong/s)
quanh
mot
truc
nin,,
l1g1ri
'ndt

phing
cua
cu6n
day,
trong
mot
tu't.rot!;A'"
;;"g
goc
v6.i
rruc quay,
c6
B
:
0,1
(T)'
Bi€n
dd cLia
sudt di€n
d6ng
xudt hi0n
trong
cudn
ddy
c6
gi6
tri
nio,ui,
aayz
A. 60 V

B.
120
V
C.
g4,g
V
D.
42,4
V
ciu
57:
Nguo'i
ta
dirrrg
m6t
laze phdt
ra
nh['ng
xr-rng^ilnh
sdng
c6
tho'i gian
kdo
ddi
cr]a
nr6t
xung
ld
t:
lcgns.

Tfnh
dd
ddi c0a
mdi
xung
6nh
sdrrg.
Cho bi€t
"
= 3. t08rn/s.
A. v
:
0,943c;
Wa
=
8
I
78,8MeV
C. v
:
0,493c:
Wa
= l678,8MeV
A.60m
B.50rn
B. v
= 0,394c;Wa
=
878l,8MeV
D. v

:
0,943c;
Wa
:
l878,8MeV
C.40m
D.30m.
B.v=
D.v=
ciu
58:
M6t con
lic
don
clL'o-c
tha
khong
v6n
t6c
ban
daLr
dr vi
tric6
ri
d6
g6c
u6.
Khi
con
r6c

di qua
vi
trf c6
ri
dd
goc
rv-
thi
vdn
t6c
crla
con
lic
duo-c
xzic
dinh
bing
bi€u
thrirc
ndo?
)o
j\co.ta -
cosao)
c.
v:
,l;F,*
-;;e
cdu
59:
Mot

vat
rin qL,ay
nhanh
din
d€u
xLrng qLranh
nrdr
rruc
cd
ainh.
Sau
thoi gian
t
k6
tu.
lfrc
vdt
bit
dAu
quay
thi
goc
nrd
vdt quay
du.o-c:
A.Ti
16
thudn
vo.i
.'[

B.
Ti
le
thudn
vd'i
t2
C.Ti 16
thLrdn
vo-i
t
D.
Ti
te
nghich
v6.i
r[
ciu
6b:
N4ot
dia
ddc
co
b6n
kinh
0.25rn,
dia
c6
thti quay
xung
quanh

truc
d6i
xri.ng
di qua
t6m
vd
vu6ng
g6c
16i
m1t
ol"9
di1
Dia
chiu
tdc
dung
cua
m6t
nr6men
ru.
r.io"g
Jai
r:3N;.;^Lr
2s
k6
rir.
Irjc
oia
b6t
dAu

quay
tdc
dd
goc
cua
dTa rdz4radls.
Morneriqurirr
tinh
cira
dTa
ld:
A.
I
=3,60 kgm2
B. l:7,50
kgm?
C.
r=o,is
r.g*,
D.
l=
l,g5
kgm2
gl
(co.sa
-
corias)
f
{roro
-cosao)

T
xi rrtt
'rrut-i'
DAI
lioc Lar.{
r'rti.f'3
-
NAM
2{Jl0
nr0N v4r'lV
T-hd'i
gian ldnt,bdi:
90
phtLt,
(60
catL tdc nghiQrn)
*
>"< >F
* t<'F
>k
*
>F >F
*
)i.
*
>F
>1<
* *
r. IHAN cHUNG cHo
rAT cA cAc

rHi sINH
(
40 cau)
(Cho
cicnnngsO:h=6,625.10'rtJs,e=1,6.10-reC,nc=9,1,10-rrlig;
c=3.108m/s;nhiQtd0n6ngchiiyciranhOm
lir6600C)
Cflu
1:
QLrang
ph6
vAch cira ngLry€n tir Hiclr6:
bLt6'c
song
cfia vach
thf
nhAt trong
ddy
Laiman:
trzr
:0,l2l5pun,
Vach
qLrang plrd
Ho
cira ddy llanme:
I2j,,
= 0,65627pun,
ba
vach cliLr ti0n cira cldy Pasen: lAn
lLrot ld: l.qr

= l,8751ptnt, i53 =
i,281SpLrn,
i.o:
_
1,0938pun
.
Khid6 tAn
s6
cua haivach
ph6
thLr hai, thu ba cua cldy
I-yman
lAn lLrot co
gi6
tri
ld:
A.2,926.10r7FI2
viL 3,085.10'/Hz
8.2,926.10''Hz
vd
3,085.10''Hz
c,z,.gzie
.nt0Hz
va
3,085.10r0H2
D.2,926.10reHz
vd
3,085.10reFI2
Cfiu
2:

MQt
nhd m6y
c6ng
nghiQp dirng
diQn nang
cl6 chay
c6c ddng co. FIQ sd c6ng'sLrait
cLrd
nhd mdy do
nhii nr-rtic
qLry
dinh
phAi
lo'n ho'n0,85
nhdm
mLtc dich
chinh
ld d€
A. nhd m6y
sdn x,,at
nl'tidu
dung
cu.
I3. dQng
co
chay b6rr
hon.
C.
nhd
rndy su

durng
nhidrrdi0n
ndng.
D.'bdt haoplii
di€n
nang
tr'6n
cluo'ng
dAy
d6n clign dOn
nhd mdy.
Cffu 3: Trong cdc
vdt k6
t€n saLr ddy,
vAt ndo
klii ho4t dQng
khdng
kdm
theo s,,r *uAt
hi€n cira tia
tu ngoai :
A. Mdy sAy
kh6
b6t
dia
c6 chircnang
diQt
khuAn,
clirng
trong

gia
dinh,
"
l].fnOi ntiOmnungntlngsitngtt;onglonringo6psudtkhiqLry6n.
': '-
',::'',' ';
'v
i-:"
I
r.t
C. H6
quang cliQn.
-+'
.'
': 7.':
"
'''l?''
'';;
:
D. B6ng den
tuli
p
n€on
dung thip sdng
trong
nhi.
Ciu
4: Khi noi
v0
tinh

chdt
cua tia h6ng
ngoai
vd tia
tri ngoai,
phat
bi0u ndo sau dAy
l:\ sai?
.
A. Tia hdng
ngoai
vd
tia
tir ngoqi
clALr ld
cdc birc
xa kli6ng
nhin thAy.
B.
Tia
hOng
ngo4i co
tdn so t6'n
hon tAn sd cLra
6nh sirng
vdng,
C.
Tia
hdng
ngoai

vd
tia tLr ngoai
ddLr co tdc
dLrng nhi€t.
D Tia h6ng
ngoqi
vir tia tLr ngo4i
cLurg
c6 bdn
chAt s6ng diQn trr.
TRU,ONC
TIIPT CIIUY[N
NGUYI.]N
IIUE
L
Ma tI€ fhi
896
JJJJJJJJJL-
Ciu
5: Cho cloqn
mach
nliuhinh
v0: itne
= 200sin 314t
(V);
R=
sr.r.6o
;
C
=

#,t,'
Cudn
ddy
thuAn cam,
L= 0,1591-1.
Eq lQcir
pha
giira
hiQLr diQn
th6
tirc thoi
LrMs vd
uaru
ld:
l
ii;r
.
+-:
f
'.n r14.,?.
€t
4.
L
R
C,,
r
A M
N
II
13

7t
D lrad
Ciiir
6: Mdt
khr-rng
day di€n
phing
g6rn
100
vong
cl6y hinh
vLr6ng canh
10crn. co the
quay
qLranh
mot truc
'ri*
nga,',g
0'
trong mdt
phang cira
khLrng,
pi
qula tdm 0
cira
khun$
vd
song song
voi
canh cira khLurg. Caur

irng tiL
Il tai
no'i dAt
khung
ld B
=
0,2T
va khLrng
quay
cl€u 300
vong/phut.
Tirn
cLrong
d6 cr-r'c dai cira dong
dign cam
irng
trong
lihr-rng,
chcr
biiSt
di0n
tro cia
khung
ld 1f) vd
cita mach
ngodi Iz\
4f)
A. 0,628A
u. 1,2564
c. 6,280

A
D. 1,570A
Ciu
7r Trong
thinghiQm
Young
vA
giao
thoa 6nh
sdng,
D=2tn.
a=1,5 mm, hai khe dLLo-c
chi6r.r sdng
ddng tho'i hai birc
x4 0,60
pr
ua
0,50
prn.
Trong
vung
giao
thoa nhf,n
vdn
trurng
tAm
ld
tdm
d6i xirng r6ng l0rnm
trOn mdrn

co so vin
sdng
la :
A.28.
8.3.
c.27, D.25
Ciu 8: Bi€n d0
cua
mQt
dao dong di€Lr hod ld 0,50m,
Li dO le
hdm cosin.
Xdt trong chu ki
dao dQng
cliLr ti6ri,
lthi
trang
t1i6i vft co
li d0
x
= 0,25m, vd vAt chuy6n
d6ng
theo
chidn'cluong
thi
pha
ctra
clao dQng ld :
Ciu 9: Hai
nguon

k6t hop A,B c6ch
nhaLr 16cm
dang
cLrng dao d6ng
vr-rdng
goc
voi
m[t
nu'6c theo
phtLong trinli
:
it
-
acos50nt
(cp).'!
ldr rndt diem tr€n
mdt
nr.rdc
thu6c
duo'ng cuc ti0r-r,
giira
C vd
trung
tri,rc
cr-ra
AB
co
m6t cluong
cr-Lc
clai. Bi€t AC=

thcrn. BC
= l3.6crn. Sd dLrolg
cuc
dai cit canh AC
ld :
7r
A.
7
rad
'o
A. nl3
/L
B.
I
rad
Z
B.5nl3
7T
C.
-;
rad
C.5xl6
D. nl6
A. 13du'ong
B.
5 cluong
C. 8 duo'ng D.
9 dLrong
Ciu
l0:

Catot cira n6t
te
bao
qLrang
diern
co gi6i
han
qlrang
di0n.la l"o:0.275pnr.
cluo'c roi sAng don-c thoi hai
birc
xa,
: rnot cir
bir'6'c
sbng 1.1 = 0,2pun
vi
rneit
co
tan
sO
ta
[
:
l,67.l0rillz.
D6 khOng co
elcctr-on niro
t6.i cluoc an0t rlii hi0Lr
dren th€
Ua6
phai

ld :
A. 1,694
(V).
t].2,398
(V).
C.
-1,694
(V).
D.
-2,398
(V)
Ciu ll: Bi€t
ffis = 1l,996Ju.
m6y=
4,0015u,
ir,r,c2 = 9i1MeV.
Nang
[Long tOi tnieu
cAn thi6t ct6 chia
hat
nhdn
C12
thdnh
ba hat
u ld
A. 0,0078
MeV.
B.
5,2783
lv4eV, C. 7,9952 MeV.

D.]
,2618
MeV.
Cffu 12:
Phdt
bi€Lr ndo sau dfty
Iit ctting
klii
n6i
uA Cien
rir rruong?
A. DiQn truong vd
tiL trLro'ng
lli
hai
mat the
hien
kh6c nhau
cira mdt
loai trLrb'ng
cluy
nhAt
gc-,i
la c1iqn tLl trirt\L.rg,
B. Van
t6c
lan
tnry6n cLra di0n
tu'tru'oLrg
trong

chdt rin l6n ho'n trong
chdt
khi.
C. Di6n
trlrmlg ve
tu trlro'ng
tdn
tai
ri6ng bi6t,
dQc lflp
v6i.nhau.
D.
DiQn
tu
trlrong lan truy0n
dLro-c
trong c6c rn6i
trllong
ran
[ong khi vd
khdng Ian tnry6n duo-c trong
chdn
khdng.
Ciu 13: 0 mqt Cdt, con lic don
dao
c16ng v6i
chu ki 2s. Bi6t khdi luo.rgTrdi
dAt
gap
8l

lAn kh6i lLrong Mat trang
r,d
bdrn kin"h Trdi ddt
gdp3,1
lAn
bdn
kinh M[t trdng.
DLla con
l6c
d6 l€n
mat trirng
(coi
chidir cldi
khdng
aOi)
tni no clao
clong
v6'i
chLr ki
:
A.2,4is
ll. 43.7s C. 2.6s
D. 4,86s
Ciu l4:
Chon cALrsal khi noi
v€
s6ng diOn tir'.
A. S6ng diQn tu co di€n
trLrons
vd

tiL
truong L''i6n thi€n cLrng
pha.
uu
B. FIai vecto B
vil E
vu6ng goc
vo'i nhaLr vd
cLrng
vu6ng
goc
voi
phLrong
tlLrye n.
C. Ntiu
cho
cdi dinh
6c
ti€n tiieo
chi6Lr
triry6n s6ng thi
chi6u
quay
cira no
lA
tir
vecto
$
U*
p

D.
NdLr
cho cdi
dinh 6c ti6n
theo chi€r,
irLryen
s6ng thi
chi0r-r qr-ray
cira n6 ld tir vecto E d6n B .
!^
Cf,u l5: Khi
gan
mdt vdt c6
kh6i lr-ro-ng m
=
4 kg vAo m6t lo xo c6
khoi lLro'ng kh6ng ddng k€, no dao clong voi chLr
ki T'
=
ls. Khi
gin
mQt
vdt
kh6c khdi lu'emg m2 vdo lo xo tr6n,
no
clao
clQng vdi cliLr l<! T2
=
0,5s. Kh6i lLro'ng m3
bang :

A.3kg
B. lkg C.0,5 l<g
D,2kg
CAu 16: Cho doan mach
ditn xoay chi6u nhLL hi,nh vd
cuon ddy
thudn
cam. Bi6t hielLr Ci0n tli€
giira
hai di6m
M.
t'
B
(Lr1,1s)
di€n lQch
phu
1
so voi
hieau cliQn th6
giira
hai
1
deLr doa.n
mqr.ch
(uas).
tr,tOi tien hQ
giLla
c1i6n trd'thLrAn R vd'i carn khdng
Zt, cita
cLron d[y vd dirng khang 21 cLra tu dr.;n li\.

Mdi li€n hQ
giira
di0n tro'thu0n
R vci'i c6rn kh6ng
Zy cba cLrdn
dAy
vd dLuig
khring Zs ctur tLr di0n ld
:
A. R?
=
Zt(Zt- Zd
Il, R2
=
ZL(Z1-
ZL) C.
R2
=
Zc(Z:
Zd D,
R2
= ZdZc-
Zt.)
Ciu
l7: PiiAn
iLng
crja
ni6t rnay
ph6t
di€n xoay

chi6u c6 200
vong cldy
gi6ng
nhau, tir thdng
qLra
rn5i vong clay cri
gii
tri cLLc dai
ld 2mWb
v;\ bi6n thi€n
di€u
hod voi
tAn sd S0Hz.
SLrAt
di€n ddng cLra
rndry co
gi6
tri higu clLurg
li\
A. r2566 V
B. 125,66 V
c.
88,858
V
D.8885B V
FCiu
18:
V6'i
ciurg
m6t cirdlg

dd drn tainguoinghe
drinh nhAt v6i
6m
c6 tAn sd
L
R
(',,
l *
A
M N
II
I]'
YCau
19: HiQn tuo-ng ndo sau cldy khdng
li€n
quan
ddn tinh chAt
luong
tir ciia iinh
sdng
:
A. Tir tr€n 5000 I{z d0n 10000H2.
C. TLr tr€n 10000H2 d6n 20000 Hz.
A. Su'hinh thdnh dong di€n dich.
C.
Su'phat
quang
cLra cac ch6t.
B. tir
1000

Hz cl0n 5000 Hz.
D.
TiL
l
ti
Hz d€n
clu6i 1000 Hz.
B.
Circ
phAn
img
quang
hod.
D.
Su tao thdnh quang
ph6
v4cli.
X
Ciu 20: Ph6t
bi€Lrnao sau
ddy lA
sai
klrj
n6i
v€ luc
hat nhAn
A, LLrc hat nhAn ld loai luc rnanli
nh6t
trong cdc loai
luc

cta
bi6t d6n hi€n
nay.
B.
Luc
hat nlidn chi tdn tai
b€n
trong
hat nhdn
ngury€n
tir.
C. Luc hat nhAn chi co tdc dgng khi
khodng
cdch
giira
liai
nucldn
bing hoac
nhd lio'n kich thu6'c hat nhAn.
D, Lu'c hat nhdn co bdn chdt
la
lirc
di6n,
vitrong hat
nhdn
cdc prdt6n
mang
cli€n duo'rrg.
Ciu
21: MLr6n

phdn
hach
U235
thiphdi
ldm
chdm
notrdn,
notr6n
dLro-c larn
ch4m
goi
ld notr6n nhi€t vi
A. notron
nhi€t co
d6ng nang bing
c1$ng
ndng trung
binh
cira
chLrydn
d6ng nhi0i.
B. notr6n
dC
gap
hat nhdn U235
hon.
C.
do notr0n o trong
mot m6i trr-ro't.tg
c6

nhi€t d0 qLrd
cao.
D, rrrrtr6n clrinr dE rJrro'c I12,i5 hAo ilrLr.
E,
CAll-22: Anh
sdng
vdng
co bLlo'c sorrg
trong
chAn
kirong
ld
0,5893'prm.
\an
tdc
itnh
sang trtitig
cliirr
khong
lir c
'
^.^(
l
i,
j.lU'rn/s.
lan
so
ctra anh
sdrng
virng trong

li\ :
A.
5.16.10r'rHz.
-
ll. 5,05.10'r'l
Hz.
C.
5,09.10r{ Hz.
D. 5,i
1.1014
I.lz.
.
/"t-
\
Ciu
23:
Dong
tiiQn xoay
chidLr
trinh sin
ch4y
qLra m6t do4n
mach
co bi(iLr
tliirc i
.=
/o
cosl
*
,

l,
voi
/0 k\
biOn cla vd
[
7'
)'
I ld
chg ki
cira dong
diQn.
X6c
dinh di6n
luo-ng
chuy6n
qua
ti6t
cli€n
thing
cira cldy
clAn
doan
mach trong
thd'i
gian
bing
mQt
phAn tu chLr
ki dopg
di€n,

vA
di$n
luo.ng
chuy6n
qua
ti6t diQn
thang cira
dfiy dAn
doan
niach trong
thoi
gian
bing
m6t
niia
clrLr ki clong
cliQn
tinh tir
thdi di€rn
0 s'
.3
:;
'
'
r
1t
-_
I,,T
t
'f

lu't
.
., _2lo'[ r\ ,,
_
],,7
,,r.
A, cl
=tut"
:0;
l).
t1
=J,'-;
q
-'0'-
C,
q
=-,
Ll
D,
(l
-

,v,
","t
T
'v'
"'-r
2I
,
If

7T
-
It
Ztf
C21n
74: Dat
vdo
hai
clAu
doan
mach l{LC
khong
phdn
nh6nh
diQn 6p xoay
chi6u
u
=
2}}Jicos(rr;
t)(V)
khi do
bi6nilrcdiQn6po
haictAurcuQnclAy
ld
ur-
=
l00cos(
ct)t++)(Y).
RieLrthirc c1i€n
apohai

clAr"rcliQntr0ld
A.
Lr
=
200J7cos(rot)(V)
B.
Lr
=
t ooJt
cos(rd t
+;XV)
-
Tt _.
C.'u
=
l00cos(a.r
t
-
:XV)
/.
Cffu25:
Choph1nirnghatphAn:
p
leoBe
'
a
*X.H4tBedirngy€n,hatpcodongnangI(p=5,45MeV.hatocci
d6ng nang
Ko =
4MeV

va
c6 7,
r
i
liong
nang
cira
li4t X ld:
A.2.575
MeV.
8.5,753
MeV.
C.4,62
MeV.
D. i.575
MeV
Ciu
26:
M6t
mdnh
gd cO
taO
c6)
co clQ
pliong
xa cira
'tC
la
i
phAn

ralphirt.
Mqit
lLLo.
ng
96
rn6'i khoi
itLcrng
tr-torg
cluong
co do
phong
xa
la l4
phdn r[/phLrt.
Chu
kj,bdn
rd
cira
Cl4
ld 5568
nam.
TLr6i
cira
manh
go
do
la :
D.
Lr
=

2}}Jlcos(ro
t)(V)
A. 124000
nam.
Ii. 1240 nim.
C. 12376
nam.
D. 12650
nam.
Ci.u27:
i,uo-ng
trr
dnh
sdng
ld:
A.
ndng
lLlolg
cira
m6i
ph6t6n rnd
ngLry€n
tir,
phdn til trao
ddi v6i chum b[r'c
xa.
B. nan!
tuq'ng
nhd
nhAt

mil
mOt
electron,
lBuydn
tu hay
phin
tir
co th6 co cluo'c.
C. nang
lr-rgng
ngLry€n
tO
kh6ng
th6
chia
c6t
dirgc.
-
D. nzrng
tuo.ng
ntrO
nhAt
co th6
do'JrLoc
bing
thr-Lc
nghi€m
Cffu
28: Cho
T

ld chu
ki
dao
clQng
cira con
l,ic
clon.
m ld khOi
luong cLra,qLrA
ning,
cr.6
[r\ bi€ri
clQ dao
clQng.
t
ld chi0Lr
ddi cga
<lAy
treo
con
[ic
c1on.
Ed tlii
ndo
saLr
ddy
m0 tA
khdng clring m6i
quan h0
giila cdc dai

lLro-ng
dic
trLmg
cua
con l[c
doir.
'iln
A.
Dd thi
hinh 3,
Flinh
2
crx
f{int
I]. Do
thi
hinh l.
C. Do tlri
hinh
l.
D. D0
tlri
liinh
2
CAu
29: Tim
phrlt
bi6u
sai
vC

hie'r
tuo-ng
quang
dAn
vd.hien tllgng
qLrang
di6n.
A,
lhAn
lon
quang
tro'
hoat
d0ng
d;ro.,:
voj 6nh,tlrrg,
h6.1q
lgoqi.
B. Chi
co
t€ bdo
qlrang di€n
co iat6t
tam bang
krm
loar Krern moi hoat
dQng
cliro'c
vri{ dnh
sdng

khii
lri&.nhin
thAy
C, Cong
thodt
cira
kim
loai
ld'n hcm
cOng cdri thi6t
Oe
birt electron li6n
k6t trong bAn
dAn.
n.
pnAritOn
t6 bdo
qLrang diQn hoqt dQng
drLo.
c v61
6nh sring
hd'g
'goai.
Clu 30:
Dua
vdo
quang
ph6
li€n
tuc

cura mQt
vqt
ph6t
ra, ngird'i
ta co
th6 x6c
clinh
dLro-c
thong
tin
gi
cLra ngLr0n
phzit
s6ng ?
A. Nhiet
d6
f{inh
3
llinh 4
B. Ift6i
luo'ng
C, Thdnh
phAn
c6Lr
tao
D.
v6n t6c chuy€n
d0ng
Ciu 3l:
Mdt khLrng

dao
ddng
goni
mdt
cLrdn
cla.y
L vi\
tp
cliqn
C
thLrc hi0n
clao clong
cli0n tLl
tu'do. Dicp
tieS cLrc
cliii
tren
tn6t
ban tLr
di€rr
lA
Q,,
= 10'^
vzi
cr,Long
c16
cldng
cli€n
cuc
clai tiong

l<hLurg
la\ I,, = 10A,
CtrLr ki dao
cl6ng cLra
lihLrng
dao d6ng
lA;
A.
2.10-rs
B.62,g.106s
c.0,628.10-5s D. 6,28.107s
Ciiu
32: M6t
rndy phdt
di€n
ba
pha
rnic
hinh
sao
co
|igLr
cliQn
fi6
dAy 220V.
Cdc rai mic theo
hinh
sao, o
pha
I vii

2
cing
nrdc
m6t
b6ng ddrr c6
di0n
tro'38O,
pha
thir
i mac den
24O.
Ditng
cli€n
trong clAy
tlung
hod nhAn
gia
rri :
D. 1,95
(A);
(v)
(v)
A.5OW
B.
l50w
c. l00w
D.200w
CAu 35: M6t
con
lic lo xo clao

clcing
clieu lioa
vo'i
phrro'ng
trinh x =
Acosli:t'vd co
co
ndng la E. DQng nang cLia vat
tiii
il
Itlfl oreln i la :
A.
0
(A);
B.
13,9 (A)
Ciu 33r
Cho
d6 thi
sLr",it
cii€n
c10ng
cira dong
ditn
xoay chi0Lr
do
rndt
miiy
phdt
difn

tao ra co
dang
rrhLl
hinh v0. Vi€t
phu'ong
trinh
hdrn
sirdt
ditn d6ng
I]
A.
W,r
=
:(
I
-r
cos2o:
t)
E
(-
W.
slncot
"2
I
/ r\;
A.,t=rr.I
r-J-
]'
\t
c-i

B.
\%
=f
tl-cos2cot)
D,
Wu
=!to"o't
c. 3,38
(A);
/ _\
A,
e
=ts:l2cos[too"r
-*)frl
/ _\
c.
e
=
I
s,7sinIt
aort
-
*
)fut
Ciu
34:
Cho mach
di€n
xoay
chieLr

R,L,C
khdng
phAn
nhdnh
uas =
200cos(,)t
(V).
CLrdn
diy
tirurin cam cir L kh0ng
clOi, tu di€n
co di€n
clLrng
C khdng
ct6i.
tnn
su
girc
or khdng A6i. tnay
clOi
n Aen cric
gid
rri ltr =
750
vd
It2: 125 0
thi c6ng
sudt
cua
dong

di€n
trong rnach
Ail co
gi6
tri nhu nhau ld P
b[ng :
(-\
13. e=5zrcosl
l00rt-=l
\.
2i
(
-\
D.
c
=
15,7 cosl
100trt +
!-
|
\
2)
Cdu 36: Phdt
bi6Lr ndo
sau ciAv la
dirng khi
n6i vd mdy
ph6t
cli0n
xoay

chi6Lr
ba
pha
A.
lvl6y
phdt
diQn xoay
chi€u
ba
pha
biiln
cliQn nang thdurh
co'ndng
vd
ngLroc
lai.
B,
M6y
ph6t
diQn xoay
chi6u
ba
pha
hoat d6ng
nho
hi6n tuong
cdrn
img dirln
tu.
C.

M6y
phdt
di€n
xoay
chi6u 3
pha
lao ra
ba
dong di€n
ni6t
pha
cirng
bi6n d6,
cirng tAn s6 vd ciLng
pha.
D. Mdy
phdt
di€n
xoay chi€u
ba
pha
hoat
d6ng nho
vi€c
sLr clung
tir trLrong
qr-ray.
Ciu
37:
Dai

FM
plrdt
circ chuo'ng trinh
ca nhac, nguo'i ta
siL dung :
f.
Song cLrc ngdn
vi chal
h"Lgng truy€n tdi
drn
thanll
t6t.
B.
song cuc ngdn
vi no kh6ng
b1 tdng diQn ly
phdn
x4 hoac hdp
thLr vd
co kha nang
truy€n di xa
rheo dLro'ng thIng.
.
C. Song trung vi
s6ng trLing
ciurg
co klii
nang trLry€n di
xa
dirc

Lri€t vdo
ban d€rn
song trllng bi
phan
ra manh
o
tAng
di€n li.
D.
song ngdn vi
s(rng ngan
bi
tAng dign ly va
mdt ddt
phan
xa nhi€Lr
l6n n€n c6
kha narig
truy6n di xa.
Ciu 38: N€Lr chi6u
m6t
chiun tia hdng ngo4i
vdo
tdm
lc€rn
tich cli6n
drn,thi
A.
tdrn kdrn m6t
clAn cli6n

tich Am.
B.
tdm
k€rntro'n€n
trr"rng hod
di€n.
C, dien tich Am
cira tAm kem
khdng
d6i
D.
tArn kErn
rndt
dAn dien
tich duong .
Ciu
39: Khdi luong
cira vfit
chLry0n
ddng
voi
vAn tdc
Col
c0
vdn
roc
dnh
sdng trong chdri
kh6ng c duo.c xdc dinh
bang bi6u thuc ndo sau

dAy
(
rno
u
kh6i
luo. ng nghi, v ld vdn
toc
chLry6n
d6ng
cira vdt
trong lie
qLry
cnitiu ctit) :
11l
t). m=,,['-5)
t
c.
nt=,.[:-')t
n. nt=-,(i-')
.
Cdu
40: Vdn
t6c trLrydn
s6ng
co
khdng
phLr thLrdc vdo
A. tdn s6
vd
bi€n

d6
cLra
song,
,i
C. ban chdt
cLra
nr6i
trLLoitg lan truy€n
song.
B.
nhi0t
d6
cira m6i
truro'ns vA tAn
sd cua sonq.
D.
bi€n dtl
cira
sdng vd ban
chdt ciia rndi truo'ng.
e
(v)
t
II. PI{AI{
I{IENG (
l0 cf,u)
T'hf
sinh
chi clug'c linr
I trong

2 phin (
phin
A hoirc phin
IJ).
A. Theo
chu'o'ng
trinh
clruin
(
tir
ciu 41 cl6n
cfiu 50)
:
Cliu 4l:
Con ldc
lo xo
gdm
vAt
kh6i lLrong
llig, lo xo
cl6 c[nig
l<
=
l00N/rn
dat
tr€n mat plring
nghi0ng
goc
a
=30u.

Ilcl
qua
ma
sat
giiLa
vdt
vd
nrdt
phing
nghi0ng.
DLla
vdt
c16n vi rr:i
cdch
vi rri lo
xo
bi
nen 2cni
rdi bLr6ng
tay khdng
van toc dAir
dC
vAt clao
clQng
di€Lr hori.
flnh
luc
tdc
do tay
t6c dirng l0n vit

ngay tliroc khi
bu6ng
tay vi
d6ng ndng
cLrc
dai Wd,n.,
cita
vAt.
Lil
g
=l0rn/s2
A.
5N; 12,5.10'rJ.
B. 2 N; 0,020J.
C6u 42:
Song dimg tr€n
cldy
cldi lrn vd'i vqrt
cin c6 ciinli, tiin
s6 l= 80H2.
Vdn
t5c trLry€n s6ng ld
40mrs.Cho
czic ciitim
M1, M2,M3,
Ma tr€n
ddy vA
l6n lLrot
ciich vat c*n c6 dinl ld 20cm,
30cm,

70cm,
75crn. Di€u n1o
,ut-,
ddy rn6 td khOng
ching trang
thdi dao d6ng
cfra
cdc di€m :
A. Mz vA
M3
dao
ddng
cLurg
pha
B,
M,r kh6ng
dao dQng.
C. M; vd
ir{1 dao
cl6ng cLrng
pha
D.
M1
vd
M:
clao cl6ng
ngLltrc
pha
Cliu 43:
Vlot vdt

thu'c
hi6n c16ng
tho'i ba clao clQng
cti€Lr
hod cung
phLrong,
cLrng tAn
sd cir
phLrong
trinh :
./t
ft
E
-5n
xr
=l,5cos(ott)(cni)l
xr
=-cos(ot+-)(cm)
;
xj
=r/3cos(olt+ )(crl)
.
pSLr.rrg
rrinh c6.
ci6ng t6ng
hop lzi
:
A,
x
=

.,,Ecos1r,-,r
-
f
lt.,ni
B.
X
=
^6cos(
(iL
+LXcm)
.6 n
Ji
ft.
C.
X=-cos(cot+-)(cm)
l).
x=:cos(c,lt-;)(crn)
CA u 44:
M6t
nguydn tiL hidrd dang
o'
trang thdi
kich
thich
N m6t ph6
ton
c6 nang
lLro'ng
r bay
qLra.

PhO r0n
nao
clLr(ri
dAy sE
khdng
gAy
ra
su
ph6t
xa cAm img cira
ngLry€n tir
A.
s
=EN-Er
lJ.
e
=Er-Er
C.3N;
0,45J.
C, e
=Ep-Ey
D.
e
=Ep-Eg
Ciu 45: Hat nhAn
']|U
pna.nrd
phong
xu
qr,a

mQt chLrdihat
nhfln
r6idAn
c16n hat
nhdn b€n chi
2!!P6.
chLr
li.v: ban
ri
c[ra
uran ld
4,5 ti ndm. MQt
mAu da
c6
hi6n nay co chiLa
s6 ngLry€n
tLl
Uran
2j!U
Uing
vo1
s6 nguyen
tLr chi
206^,,,
^,
:
-
'E3Ph
bb Cho
rang

rnAu cla cer do lirc ddLrkhdng
c6
chira
chi.
U'6'c tinh
tLrdicira
miu cLi c6 Ia
A. 4.5.ti
narn
ll. 2,25 ti
nam.
C. 9 ti narn.
D,
6.75 ti nrrn
Ciu 46:
Bi€Lr thirc cuong cl0
ctong
clilln xoay chi€u chay
cpa
mot
cloan rnach
lh i=
lncos(l00nrXA;. r,or
1,,> 0
va
i
,.
']
tinh
b.ang

gi6y
(s).
Tinh tLl iiic
0 s,
xric dirih tlioi di0rn ddLr tiOn
nid clong
di€n co
cuol1-q
cl6
t[r'c thoi bang
cLrorg do hi6Lr
dLrng ?
a
t=
t
(r).
400'
''
B.
r=tfrt'l
c.
t=frtr;
D.
r=*,',
Clu 47;
'frong
thiLigiriQm v0
giao
thoa 6nh
sdng voi lLlo'ng

lang.kinh
F-resnel :
liQ hai
iang kinlr
gi6ng
hqr nhau co
g6c
chi€t
qlrang
A=30', chi6t
sudt cira
cac
lang
kinh aOi
vOl rlnh
s6ng
thi nghiQm ld n=1,5.
Nguon
sdng
S ciiit
trong rndt
phang
d6y
cira
hai
lang
kinh cdch lLL6'ng lang kinir doan
d=2Ocrn,
Tr€n
man cdch

lLrdng
lang
kiirh cl'= 3m ta thur
cjuo-c
h€ thdng vdn
giao
thoa
co
khoang
vdn
1mm.
BLloc
s6ng
dLrng
trong
thi nghiQn
co gid
tri ld
:
A.
0,54
prn.
I).
5,25
pim.
C. 0,75 pln.
Cdu 48:
Di€rn
kh6c
nhau

co'brin giu'a
clao ddng duy tri vd
dao
d6ng
cLro'ng
birc lA :
A.
Pha
ban cliu B.
Ngoai
luc
tdc clLrng co
tinh tLrAn hoiln
C. Bi€n
dd D.
Tdn
s6
Cf,u
49:
Mdt
vdt dao d6ng cli€Lr hoa
theo
phuLong
Ox
vd'i phLlong
trinh
x =
6cos(4t
-
nl2)

(x
tinh
bang
cm. thdi gian
tinh
bing giAy).
Gia
tdc
cira vqt c6
gid
rri
l6'n
nhdt
ld
A;
24
cm/ s2. Il. i,5 crn/ s2.
D.
iN; 45rnJ.
D.
5,25
prni.
C.
9,6
crn/
s?
D. 0,96
nr/s2.
Ciiu,50: lvlot mach
dao clorrs g6m

ntOt cLrdn tl6y
co c10 tLlcanr,5rlll
vri
tLr cliOn cti
di.^n clune
50111:'. ili;Lr
cli6n rli,i
tliin'
/\
hai bin
tLrc{ien la
5
V2
V l<hi
niing
lirong
di€n
trLtorg bang nitng
lLLoLrg
tiL truro'ng.
Niurg lLloLrg cLra
rnuch
clap clclns
lii:
A.25mJ
A.7irn
A,
lis=
1,697V
;

Lr= 1,469V
C.Uo:
16,97V
;
u
=
14,69V
ll. 2,5mJ
c.
l06J
C. 1,42 krn
D. 0,l5nr.i
,.1 , L
thi ngLtoi
iiy thiy cLt'o'n!t
do
arit
D. 142 ni
b. Theo
chu'o'ng
trinh
nflng
cao
(
tt,cflu
5l c10n cf,u
60) :
Cliu 5l:
Mdi
ngLlo'i

dinrg
cac-lr
ngLron
Arn
m6t
khoang
r. Khi cli 60rn
lai
gAn
nguon
tang
gAp
3 tdn.
Gi6 tli cira
r :
ll.
124
m.
Ciu 52: TAt
ca c.4c hdnh
tinh cl0LrqLlay
xlrng
qLranh
Mar Tro'i theo cimg
rndt clii€1r.1'rong qLrd
trinh
hinh thi\nh
h0 Mrit
Troi. clAy
clric cliin ld h€

qua
cia
:
A. su'bao todn vdn t6c
(c1inh
lLrat
I NiLr
To'n). B.
sr,r bio tozin nirng
luong.
C.
Sr't
b6o todn m6
rnen cl6ng
lLLo-ng.
D.
sLt bAo todn
d6ng luo-ng,
Ciu 53: MQt mach dao
d6ng
gdrn
cu6n dAy
c6
dQ
tLl cdn 0,2H vd tp
diQn c6
di€n dung C=10pLF thLrc hi€n
dao c16ng
cii€n tu.tLl do. Bi€t
cuolrg

c16 cLrc
clai trong khLrng ld Io:0,012A.
Khi clrong
c16 dong clien
tirc
tho'i
iL,006A thi lri€ir
,A
di€n
th€
cqc daivd hiQLr
diQn thd
tiLc tho'i
giila
hai ban tp
di6n
ld:
C0u 54:
Phat
bi6u ndo sau ddy'khdng phiii
ld cdc clac diSm cira
tia X'/
A, Iftri
nang dAru'xuy0n
nranh.
C. Tdc
dung rnanh l6n
kinh linlr.
Il.
Uo=

l6,9lV
;
Lr=
8,98V
D.
Urr=' 1,691V
;
ir ='0,898V
ll.
Co th€
di
qua
duo'c
ld'p chi diry vi\i cm.
D.
Gdv ra hi€n
tLro'irg
quang
cli6rr.
Ciu 55: M6t con lic vAt
li lA
mQt thanh mzinh, lrinli
tru. dong chdt,
kh6i liLo'ng
m, chi6r"r cldi
t.
ctao
clong clidLr hoa
,l
(tron-q

m6t
tnat
phang
thang dilng) qLranlr
mdi trulc cd dinh
ndni
ngang di
qLra
m6t dAu
thanh.Bi€t ntomen
qLriin
tirrh
r z rl
cira tlranh v6'i
trirc
quay
cid clro
ld
I
=,!t4:! Tai
noi co
gia
t6c
trong truorg
g,tfrn
sd
goc
cira
con lac cld clio la
J

r;
A. c,t
=
^lL
v3l
l-
lid
B. o
=
.l"o
\/zt
/;-
t)o
c. 0
=
.l-o
\/31
l).
ro
=
Ciu 56: Thrrc
hi0n thinghi€ni
giao
thoa tr€n
mdt nu<ic:
A vd
B ld
liai ngudn
k6t hop cti
phLLolg

trinh song tai A. Il
lir
,.
Lra
=
Lrs
=
asin(r)t
thi bi€n c16
song t6ng hqp t4i M
(v6'i
MA
=
d1 vd
MB =
cl2) ld:
A rrrcosve#)
C.2ccosn(t+t)
B.?ucosn(+)
I r.t .,)ll
D.2crl."r""\,-l
Ciu 57: MQt so. i ddy clng
giila
hai di€m
c6
dinh,
ngLroi
ta tao
song
dinrg

tr€n clAy.
Hai tAn s6
gAn
nhau nhat cunq raci
ra
song
dimg tr6n dAy
ld 150llz
vd
200112. Tdn s6 nho nhdttao
ra
song
dinrg
tr6n ddy do ld
:
A,125Hz
B.
100H2
-
C.
50F{z
D.75LIz
Ciu 58: N€u dinh lLrdt FlLrbble
du'o-c
ng<jai suy cho nhimg
khoing
crich
rAt l6n thi vAn
t6c liri ra xa tro'n€n
birng v,An

tdc iirrh
sdng 6'khodng c6ch
A.
5,295.1018
nam dnh
s6ng.
Il.
5,295.1015
narn 6nlr
siing.
C.1,165.1010ndm dnh sdng.
D. 1,765.107
nam
dnh
sdng.
Ciu 59:
Gie sir m6t xe
ph6o
chLry6n
d6ng
v6'i vdn t6c
3/4c
so vd'i
tldi ddt,
bin ra
mor vi0n dan vo'i
vin rtlc 3/4c so r,iri
xe,
Quan
sdt, vi0n

tr€n
mat
ddt se
thdy.
gi
?
A. Vdn t6c cira
dan nho hon van t6c
6nh
sdng.
B. Vdn t6c cLra dan
bing vdn tdc 6nh
siirrg.
C.
VAn t6c cira dqn bing
6/8 tAn
vdn
t6c
dnh
sdng.
D.
Van
t6c cira
vi€n dan
phu
thudc
vdo
vi
tri cira
quan

s6t
vi6n.
Ciiu 60: MQt
ch6t
ph6t quang
co khzi
nang
phdt
ra
b[r'c
xa
co
bu'd'c
song ]" =
0,5prn.
Etich6t do kh6ng
phdr qLrang
rhi
ta chi0Lr viio
d6 mdt birc x4
co bu6'c
s6ng:
C.
l" =
0,45pLm
A. l"
= 0,6pm lJ.
l"
= 0,3pLm
D. l" = 0,i5pirrr

pAp
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np
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wcLlv6N
HUE
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op
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168
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D
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31 B
628
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35
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628
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628
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428
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45
B
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60 D
743 1B
743
2D
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743 48
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74? 10c
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48
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896
31
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34
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896
35
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896
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896
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A
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43 D
896
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896
45
B
896
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59C
RqA AN
^
357 1D
485 1C
.
357
28 485
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3s7
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6C

357
7D
485 7A
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485
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108 485 108
357 11A 485
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357
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485'l3A
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357
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357

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485
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485
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485
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357
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485
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357 238
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485 zsD
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26A
485
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485 27D
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48s
28D
357 29C
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485
31
A
3s7
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485
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485
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3s7
34C
485
348
357
35D
485
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357
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485
36 B
357
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485
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357
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485
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357
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485
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357 41
A

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41
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357 42A
485
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-
357
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46
D 485
46
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357
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357
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357
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508
485
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485
51
A
357
52A
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52D
3s7
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485
55D
3s7

56D
485
568
357
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u.ip
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gr.
ttit ii-ti-
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ilCIi
3 :0lo ririx
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