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Class 11 Physics (Part Ii) Chapter 16 Oscillations Quiz 6 (25 MCQs)

Quiz Instructions

Select an option to see the correct answer instantly.

1. Unit of Frequency is

Correct Answer: B) Hertz.

2. A particle is moving in a circle with uniform speed. Its motion is:

Correct Answer: B) Periodic but not simple harmonic.

3. What is the amplitude of an oscillation?

Correct Answer: C) Maximum displacement from the equilibrium position.

4. Two simple pendulum, A and B, are each 3.0 m long, and the period of a pendulum A is T. Pendulum A is twice as heavy as Pendulum B. What is the period of pendulum B.

Correct Answer: D) T.

5. A pendulum makes 33 complete back and forth cycles of vibration in 11 seconds. Its period is

Correct Answer: C) 0.33 s.

6. How does the amplitude of an oscillating system change with the driving frequency in forced oscillations?

Correct Answer: A) The amplitude increases until resonance frequency and then decreases.

7. Resonance is Inversely proportional to

Correct Answer: C) Damping.

8. Assertion:Sine and cosine functions are periodic functions.Reason:Sinusoidal functions repeat it values after a definite interval of time.

Correct Answer: A) Both assertion and reason are true and the reason is the correct explanation of the assertion.

9. A tennis ball is being swung on the end of a 1.5 m (r) string and takes 1.25 seconds (T) for a complete revolution. What is the period (T) of the tennis ball?

Correct Answer: A) 1.25 s.

10. For a simple harmonic oscillator, which of the following pairs of vector quantities CAN'T both point in the same direction? (The position vector is the displacement from equilibrium.)

Correct Answer: C) Position & acceleration.

11. When orbital speed increases, the orbital period .....

Correct Answer: B) Decreases.

12. The displacement of a particle is represented by the equation $y=3\cos\left(\frac{\pi}{4}-3\omega t\right)$

Correct Answer: A) Simple harmonic with period $\frac{2\pi}{3\omega}$.

13. An ornament of mass 40.0 g is attached to a vertical ideal spring with a force constant (spring constant) of 20.0 N/m. The ornament is then lowered very slowly until the spring stops stretching. How much does the spring stretch?

Correct Answer: B) 0.0196 m.

14. Which of the following statements about forced oscillation is correct?

Correct Answer: A) The system oscillates with the frequency of the external force.

15. Energy transfer during oscillation occurs between:

Correct Answer: B) Kinetic energy and elastic potential energy.

16. Critically damped oscillation occurs when:

Correct Answer: C) Damping matches the natural frequency of the system.

17. Which equation defines work done by the spring?

Correct Answer: C) U$_{1}$-U$_{2}$.

18. Total energy in case of damped oscillation during oscillation

Correct Answer: B) Decreases exponentially .

19. The relation between velocity amplitude v, the displacement amplitude A and the angular frequency w of SHM is

Correct Answer: B) $\nu=\omega A$.

20. Your pulse is a repeating pattern of motion. How can your pulse be related to waves?

Correct Answer: C) Waves and your pulse are examples of things that oscillate.

21. What is phase shift in oscillations?

Correct Answer: B) Displacement or difference in timing of two oscillating waves.

22. The point where a wave crosses the resting line is called .....

Correct Answer: C) Node.

23. Which statement is true about the energy of a system in forced oscillation?

Correct Answer: A) The system continuously receives energy from the external force.

24. The natural frequency of an oscillating system is:

Correct Answer: B) The frequency at which it oscillates without any external force.

25. A particle of mass 0.1kg performs SHM of amplitude 0.3 m. The period of SHM is 3.142 s. The maximum force that the particle will experience is .....

Correct Answer: A) 0.12 N.

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