Oscillations MCQs For NEET

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

View Answer

Answer:Decrease

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%

View Answer

Answer:10%

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

View Answer

Answer:0.99 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

View Answer

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

View Answer

Answer: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

View Answer

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

View Answer

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

View Answer

Answer:parabolic

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

View Answer

Answer:Periodic

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

View Answer

Answer:3 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

View Answer

Answer:emains the same

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

View Answer

Answer:0.02

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

View Answer

Answer: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

View Answer

Answer:3k

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

View Answer

Answer:10 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%

View Answer

Answer:10%

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

View Answer

Answer:1.44 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.

View Answer

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

View Answer

Answer:2 ∏ / 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

View Answer