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#### Waves Two Marks Questions

11th Standard

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Physics

Time : 00:45:00 Hrs
Total Marks : 30
15 x 2 = 30
1. An increase in pressure of 100 kPa causes a certain volume of water to decrease by 0.005% of its original volume.
(a) Calculate the bulk modulus of water?.
(b) Compute the speed of sound (compressional waves) in water?.

2. Suppose a man stands at a distance from a cliff and claps his hands. He receives an echo from the cliff aft er 4 second. Calculate the distance between the man and the cliff . Assume the speed of sound to be 343 m s-1.

3. Sketch y = x −a for different values of a.

4. What is meant by interference of waves?.

5. Explain the beat phenomenon.

6. Define intensity of sound and loudness of sound.

7. Why is the roar of our national animal different from the sound of a mosquito?

8. What is Reverberation?

9. What is meant by reverberation time?

10. Define particle velocity.

11. Write the relation between path difference and phase difference?

12. How can we distinguish experimentally between longitudinal and transverse waves?

13. Explain why we cannot here an echo in a small room?

14. What is the difference between an echo and a reverberation?

15. Tube A has both ends open, while tube B has one end closed, otherwise they are identical the ratio of fundamental frequency of tubes A&B?