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Class 11 Physics (Part Ii) Chapter 16 Oscillations Quiz 2 (25 MCQs)

Quiz Instructions

Select an option to see the correct answer instantly.

1. What is the frequency of a pendulum

Correct Answer: B) How many times the pendulum passes a point in one second.

2. The length of the second pendulum is given by

Correct Answer: C) 1 m.

3. A system exhibiting SHM must possess .....

Correct Answer: A) Elasticity as well as inertia.

4. What is resonance in oscillations?

Correct Answer: D) Large amplitude oscillation.

5. What is Hooke's Law?

Correct Answer: B) Force is directly proportional to displacement.

6. The driving frequency of an oscillating system refers to:

Correct Answer: B) The frequency at which it oscillates when driven by an external force.

7. What is the main difference between free oscillation and forced oscillation?

Correct Answer: A) Free oscillation occurs without external force, forced oscillation occurs with external force.

8. An object is attached to a vertical spring and bobs up and down between points A and B. Where is the object located when its elastic potential energy is a maximum?

Correct Answer: A) At either A or B.

9. The waveform of simple harmonic motion is

Correct Answer: A) Sine wave.

10. In a simple harmonic motion, the restoring force is proportional to which of the following?

Correct Answer: A) Displacement.

11. THe ratio of maximum acceleration to the maximum velocity of a particle performing S.H.M is equal to

Correct Answer: B) Angular velocity.

12. The amplitude of a particle performing SHM is doubled. How does it affect the period of the particle?

Correct Answer: D) The period remains the same.

13. A particle is in simple harmonic motion. The amplitude of the motion is 3.0 m and the frequency is 20 Hz. At time t=0, the displacement of the particle from the equillibrium position is x=+3.0 m. Which equation correctly represents the variation of displacement x with time t?

Correct Answer: D) X=3.0 cos $40\pi t$.

14. A mass-spring system can oscillate with simple harmonic motion because a compressed or stretched spring can store which kind of energy?

Correct Answer: D) Elastic potential.

15. A mass-spring oscillating system undergoes SHM with a period T. What is the period ofthe system if the amplitude is doubled?

Correct Answer: C) T.

16. A spring of force constant k is cut into two equal parts, which are then connected in parallel to each other. The force constant of the combination is

Correct Answer: A) 4k.

17. The time period of a simple pendulum is 1.6 s. Find the total time taken by it in 28 oscillations.

Correct Answer: B) 44.8 s.

18. Which of the following is an example of forced oscillation?

Correct Answer: A) A child swinging on a swing being pushed periodically.

19. The ratio between the time of an amplitude and the time of a complete oscillation is .....

Correct Answer: D) 1/4.

20. Group velocity is given by

Correct Answer: A) $\frac{\text{d}\omega}{\text{d}k}$.

21. What is the highest point of a wave?

Correct Answer: D) Crest.

22. The frequency of an oscillating system is 5 Hz. What is its period?

Correct Answer: A) 0.2 seconds.

23. How is the period of an oscillation related to its frequency?

Correct Answer: C) Inversely proportional.

24. A uniform ring of radius r is pivoted about an axis pass-ing through O on the circumference of the ring and perpendicular to the plane of ring. The time period of small oscillation is

Correct Answer: A) $2\pi\sqrt[]{\frac{2r}{g}}$.

25. The lowest point of a wave is called .....

Correct Answer: C) Trough.

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