KT 45p chuong 1,2-VL12CB-Co dap an

KIỂM TRA 45 PHÚT MÔN VẬT LÝ 12 CƠ BA
̉
N

ĐÊ
̀
_2_____
Họ va
̀
tên
_
Lơ
́
p:
__
1.







   !" #!"$%&'
2.
()*

+ ,

- +
,


 ,


.
 +/
+
 - ,


.
 +/
+

0
.
 ,


.
 +/
+
#1


.

+



&


+


2
+
&

- +
+

3.
34 ,

+
+
5

,


+

.


6,
.


 (

%,
+

78
π
 1

 %&

,
+

98
π

:

%

,#
+
%&

,
4.
*; <=>?< @ A4/B?C4D4@


g
l
T
π
2
=

l
g
T
π
2
=

g
l
T
π
2
1
=
#
l
g
T
π
2
1
=
5.

 ,

+
+

+
%
+
+&,E
F
GH&I9J
π
K
H
π
LIL5E
9
G7&I9J
π
M
N
H
π
LIL0

6
.

+
&

A
+


O,



%
.
 ,

,
.


%6-+M9
π
,

 ,

,
.


%6-+MF
P ,




%##,

 E
F
&

% ,

E
9
,



MH
π
6.
+*

+
.
,


.
 ,


+


P

%. ,



 P

%
.
 ,


Q
6

P

 ,

- +#P

%
.
 ,

+
+


7.
R&?STUV%W?
XY&C5X6@X%XY&C5X6@Z%*,[/
XY&C@X%#XY&C@Z%*,[/
8.
\]^_R T6`Ba`R@
:_%46 :_/% :_ 4= #:_A%/6
9.
$a^&^b5&>5-S 5&>5
5&>56 #5&>5
10.
!6T6T @GJ5c:d?E$E,T@T4E, TY&C
( )
Hzf
r
9
=
:?
TeC6UT4E,&?&$B'OFH8&fF578&f F59 8&f#Fc8&
11.
g4/e@Y=E5=Eh4FJI1'AGFJ8&
9
L*U e@
c59N&c95N&J5c9N&#H5F7&
12.
>=E ,<@TY&C9Pi5?*CSWa@FJJ5'Aj
9
GFJ"=E
  Fc:8  FcJJJ:8 FcJJ:8 #F:8
13.

!>b=6*CS54/@&S A @l 5aB?C4D4GFJ8&
9
k
&$@`W*; >* T6k@3G9&< @

@
 F  F5l9 # 95l
14.
P>?< @
F
@
9
*mHJ5S4/BX34X*W
V`ZS&C YS@F9@N< @
F
@
9
"@
cJ@nJf97  @l7 fnJ@cJf#Ho5l@co5lf
15.
!e <=T6GFJ@Y&C9PiDC@Vep6 04U e@

L7&IFJ
ππ
+=
tx
IL







+=
2
410
π
π
tcosx
IL
L9&IFJ
ππ
+=
tx
IL#
tsinx
π
410
=
IL
16.
!e`Z <@T*U 3GH5F7&@6 GF3B Req4^6r5
eCe?6r6OJ5l8&F8&9 8&#H8&
17.
!e <=/%4Bs @9JT*U3G9&DC@Ve
q4^6r/<]B04U e@
EG9J&IjKLILEGFJ&IjK
9
π
LILEG9&IjKLIL#EG&I9jKLIL

18.
04U >=E@EG7&9
π
ILteA-=6GlJJI1'A
π
9
GFJL
J5JJFcu J5JFcuJ5FcFJ
MH
u #J5Fcu
19.
!e`Zb <=X%/$%4U
E
F
G7&I
π
K
9
π
L@E
9
G7
H
&I
π
L04U [S%@
E
F
GN&I
π

K
c
π
LE
F
GN&I
π
M
c
π
LE
F
GN&I
π
M
c
π
L#E
F
GN&I
π
K
c
π
L
20.
!Y=ES4/@RCqv5Y*4/Wa
F
U*; @3
F

GJ5c&gAW
a
9
@U*; 6r3
9
GJ5N&3^*; *4/b
F
@
9
@=E
3GJ59& 3GF&3GF57& #3GJ57N&
21.
!ea>@=E?"*G7J:8`ZS97 4F9&*;@*CSe
+
I1'A
9
FJ
π =
L J5l& 
+
J59l*9&
+
J59l*9&
+
7*#J5l&
+
7*
22.
\WY*CS
F

>@=EU T*;3
F
GJ5c&3AWY@A6rWY*$?*CS
9
UZ 
T*;3
9
GJ5N&*; ZbWYX>@=E
+

A.
F57&F& F5FN&#JlH&
23.
1=E?"*GF:81YS4/e?*CS'%HYU*6r=E?$< @995l@9o5l
*; ` >=E*WeX4/@=E
+
1'AGFJ8&
9

A.
l&c59N&Jc9N &#Jl&
24.
!,

-
+
E ,

+
+



*A
+
3Gl&64-+


+

.
Gl&



,

E
J
G
9
9

+


,
J
G
9
l

π
8&%42
+

.
-

 


EG&I
9
l
π
M
7
π
LIL EG9&I
9
l
π
M
7
π
LILEG&I
9
l
π
M
9

π
LIL #EG&I
9
l
π
K
7
π
LIL
25.
!&$&?4ab'A*W$_D&?d%6r9@?cD&?4Ta4DN&
teC4A<&?4aT@H598&  F5 9l8&95l8& #H8&
26.
!&?4A<4a6R?6T&?
λ
GwHmgW$_RY'4X%4A<&?
Z%nJ
J
@  J5ol  F5lH #9
27.
Pb&?*dS%&
F
&
9
GF9%$&??Y&CxG7JPieC4A<&?G98&5&CS`B@
H 7 l #o
28.
(? yEWA44 AGFFTY` 56T&?6r734 A?
l6z57V 76z5lVl6z5lV #c6z5cV
29.

BR4,44A<@)GFJ
Ml
{8
9
d|@)
J
GFJ
MF9
{8
9
!"B
R?6rlJ  cJ oJ   #NJ 
30.
!A@ @cJ%$4F?Y&CFJJPi\&$ A@5'A?7VIbWVpY AL
@H6z3^6T&?@eC4A<&?4 A
7
+
7J8&J7
+
7J8&7 
+
7JJ8&#!,



%

*

