Oscillations

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Question

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Question 1 : In damped oscillation the directions of the restoring force and the resistive force
1. are opposite
2. are the same
3. may be same or opposite
4. have no relation with each other
Answer
8368

Question 2 : he displacement y of a particle executing periodic motion is given by y = 4 cos² (t/2) sin (1000t). This expression may be considered to be a result of superposition of the following number of harmonic motions.
1. two
2. three
3. four
4. five
Answer
8369

Question 3 : Spring is pulled down by 2 cm. What is amplitude of motion?
1. 0 cm
2. 2 cm
3. 4 cm
4. 6 cm
Answer
8370

Question 4 : One of the two clocks on the earth is controlled by a pendulum and other by a spring. If both the clocks are taken to the moon, then which clock will have the same time – period of the earth?
1. spring clock
2. pendulum clock
3. both
4. none
Answer
8371

Question 5 : When a particle performing uniform circular motion of radius 10 cm undergoes the SHM, what will be its amplitude?
1. 2.5 cm
2. 5 cm
3. 10 cm
4. 20 cm
Answer
8372