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Free download in PDF Class 11 Physics Chapter 14 Oscillations Multiple Choice Questions and Answers for Board, JEE, NEET, AIIMS, JIPMER, IIT-JEE, AIEE and other competitive exams. MCQ Questions for Class 11 Physics with Answers were prepared based on the latest exam pattern. These short solved questions or quizzes are provided by Gkseries. These will help the students for preparation of their examination./p>
(1)
A pendulum suspended from the roof of a train has a period T (When the train is at rest). When the train is accelerating with a uniform acceleration a, the time period of the pendulum will
[A]
Increase
[B]
Decrease
[C]
Remain unaffected
[D]
Become infinite
(2)
Length of a simple perdulum executing simple harmonic motion is increased by 21% . The percentage increase in the time - period of the pendulum of increased length is
[A]
10%
[B]
1%
[C]
21%
[D]
42%
(3)
Time period of simple pendulum of length l and a place where acceleration due to gravity is g is T. what is the period of a simple pendulum of the same length at a place where the acceleration due to gravity is 1.029 is,
[A]
T
[B]
1.02 T
[C]
0.99 T
[D]
1.01 T
(4)
Total energy of a particle executing S.H.M. is proportional to
[A]
Square of the amplitude of the motion
[B]
Frequency of oscillation
[C]
Velocity in equilibrium position
[D]
Displacement form equilibrium position
Answer: Square of the amplitude of the motion
(5)
If the length of a simple pendulum is doubled keeping its amplitude constant its energy will be
[A]
Unchanged
[B]
Doubled
[C]
Four times
[D]
Halved
(6)
The necessary and sufficient condition for S.H.M. is
[A]
Constant period
[B]
Constant acceleration
[C]
Proportionality between restoring force and displacement from equilibrium position in opposite direction
[D]
None of the above
Answer: Proportionality between restoring force and displacement from equilibrium position in opposite direction
(7)
Two equal negative charges -q are fixed at point (0, a) and (0, -a) on the Y-axis A positive charge q is released from rest at point (2a, 0) on the X-axis. The charge Q will (IIT 83)
[A]
Execute simple harmonic motion about the origin
[B]
Move to the origin and remained at rest
[C]
Move to infinity
[D]
Execute oscillatory motion but not simple harmonic motion
Answer: Execute oscillatory motion but not simple harmonic motion
(8)
Grap of potential energy vs. displacement of a S.H. Oscillator is
[A]
parabolic
[B]
hyperbolic
[C]
elliptical
[D]
linear
(9)
If a particle is moving in a circle, with a uniform speed, then its motion is,
[A]
Oscillatory
[B]
Periodic
[C]
Non-periodic
[D]
Simple harmonic
(10)
Time period of pendulum is 6.28 sec and amplitude of oscillation is 3 cm. Maximum acceleration of pendulum is
[A]
8 cm/s2
[B]
0.3 cm/s2
[C]
3 cm/s2
[D]
58.2 cm/s2
(11)
In damped oscilation , the angular frequency of the oscillator
[A]
keeps on decreasing
[B]
keeps on increasing
[C]
emains the same
[D]
fluctuates
(12)
The motion of a particle executing simple harmonic motion is given by X = 0.01 sin 100p (t + 0.05), where X is in metres ant t in second. The time period in second is
[A]
0.001
[B]
0.02
[C]
0.1
[D]
0.2
(13)
The velocity of a particle performing simple harmonic motion, when it passes through its mean position is
[A]
Infinite
[B]
Zero
[C]
Minimum
[D]
Maximum
(14)
If a spring of force constant k is cut into three equal parts , then force constant of each part will be
[A]
k/3
[B]
k
[C]
3k
[D]
6k
(15)
The displacement of particle performing simple harmonic motion is given by, x = 8 sin wt + 6 cos wt, where distance is in cm and time is in second. The amplitude of motion is
[A]
10 cm
[B]
14 cm
[C]
2 cm
[D]
3.5 cm
(16)
Length of a simple perdulum executing simple harmonic motion is increased by 21% . The percentage increase in the time - period of the pendulum of increased length is
[A]
10%
[B]
1%
[C]
21%
[D]
42%
(17)
The time-period of S.H.O. is 16 sec . Starting from mean position , its velocity is 0.4 m/s after 2 sec . Its amplitude is
[A]
0.36 m
[B]
0.72 m
[C]
1.44 m
[D]
2.88 m
(18)
The period of a simple pendulum is doubled when
[A]
Its length is doubled
[B]
The mass of the bob is doubled
[C]
Its length is made four times
[D]
The mass of the bob and the length of the pendulum are doubled.
Answer: Its length is made four times
(19)
A pendulum of length 10 cm is suspended from the roof of a vehicle which moves without friction down an inclined plane inclination 60o with the horizontal . The time-period od oscillations of the pendulum will be
[A]
2 ∏ / 7 sec
[B]
2 ∏ sec
[C]
∏ sec
[D]
∏ / 7 sec
(20)
A particle is performing S.H.M. its amplitude is A its potential and kinetic energy become equal at the displacement y . The displacement , y, in terms of amplitude A is
[A]
A
[B]
A/√2
[C]
A√2
[D]
A/2
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