Đề luyện thi 1

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Thời gian làm bài: 90 phút;
(50 câu trắc nghiệm)
Câu 1:
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A. D$d25B. D$@5
C. ?"8a5D. @n2Tw(\qZ({DZd25
Câu 40: T2Zp+#"8W$/9‹1{2LPin%2Tpw%+#"8W$tk&iN-;I6O5nLDY
2TEn(rH$T!8tTqd2P-
,
π
/61Hp(r(-,IIŒ5`ptp!$
-

,I
4
π
−
/R15W$|L&"##pw%s""k$#Z2ZA&X2%"
4
π
&#

Xpw%s""f2H?tw(\_"LDY*
A. Q;
Ω
5 B.,II
Ω
5 C.4II
Ω
5 D.,;I
Ω
5
Câu 41:h$sai?tW]mYy!`_"wD#ZF$"%a
A.q"Y#F$"%aZm%`YZ%w+Z"EnBY%km$Z#${&w5
B. •$8i#whB~(Er2TF$"%aZ%w+ZY2TF$"%aZm%`5
C. q"Y#F$"%aD`"EnBpT${&w5
D. q"Y#F$"%aD`"EnBY%km$Z#${&w5
Câu 42: W$Y#&"$8DYđúng?tWT@Yn@_"2T[?iDB?a!"#TW$
V"5
A. (#2T$?9D$t cf22YrtT@E^.n@5
B. n@@|?DT_"[@
C. (#2T$?†D$t4cf22YrtTE^n@5
D. T@_"2T[@|?[i_"[@5
Câu 43:qp"##"w&wF$"?CJHEn"-IH;22H-425u${=%ww&w{2wEy+Z
&UtEX&tgIH
m
µ
nIHeS
m
µ
5=iEy+ZE\UZf2(2YŽw($2IHe42DY
A. ;5 B. 5C.45 D..5

Câu 44:T#DU{22TVE•?iDB2H(C#Y#2T&B!8?bH?iDB!8?
w?f5G#DUY8!"#TW$V"X$?9.&9VE$8fT($(V 25c"f
VEB;2?fg\(]E^DY*
=$k2YE&#Z*lZ2=$m
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Cõu 45:u[+zY#!X8saiW"#Z>
A. "#ZDYsEy+Z?9m8BHtk&i&tk&i&t_"w&w]25
B. "#Zw!`(m2ZD?]d5
C. "#ZE\$?2Y$m%`2Z5
D. w{F$"pH$HYs[E\$t(.III
I
W$DYs${%w"#Z
2Z5
Cõu 46:~Y#"k$2T$T!8$kd2tTqd2

IH;

/61H2Tpw%+#"8W$a\5Gpw%
ycDY
SI S

/19cT!VpycF$"2ZDY
4

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SI 4
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cT!VpycDY
S
/A15k&i_"!Vp~Y#"k$2ZDY*
A. S;6O5 B.SI6O5 C.SQ6O5 D.;I6O5
Cõu 47:T&th($8WC#%+X%(9!"#TZ*+- #&/
4

J
4

1/215iT
($8W&t-IH 2<&5Tf2w?#d!-5nDT_"!"#TZrcf2DY.25P
T_"f2&"$cf2&"$tS8DY*
A. +

-J 25 B. +

-.25C. +

- 25 D. +

-J.25
Câu 48: Với con lắc lò xo nếu tăng khối lợng và không thay đổi biên độ thì.
A. Thế năng tăng B. Động năng tăng
C. Cơ năng toàn phần không thay đổi D. Lực đàn hồi tăng
Câu 49: Gọi

và

là vận tốc cực đại và gia tốc cực đại của một vật dao động điều hoà. Chọn đáp án đúng công thức
tính biên độ của dao động của vật.
A.
4
A


=
B.
4
A


=
C.
5A

=
D.

,
5
A

=
Câu 50: Hai con lắc đơn có chiều dài lần lợt là l
1
và l
2
. Tại cùng một nơi các con lắc có chiều dài l
1
+ l
2
và l
1
- l
2
dao
động với chu kỳ 2,7s và 0,9s. Chu kỳ dao động của các con lắc có chiều dài l
1
và l
2
cũng ở nơi đó là.
A. T
1
= 1,8(s) T
2
= 2(s) B. T
1
= 2,2(s)T

2
= 2(s)
C. T
1
= 2(s)T
2
= 1,8(s D. T
1
= 2(s)T
2
= 2,2(s)
Ht
=$k2YE&#Z*lZ2=$m