Sounds 1

1. Why are concert halls and broadcasting studios made of walls of absorbent materials such as cotton wool or rubber?

Question 1 of 23

2. Define reverberation?

Question 2 of 23

3. The velocity of sound in air:

Question 3 of 23

4. Sound waves obey the laws of reflection?

Question 4 of 23

5. In which of the following medium is sound transmitted slowest?

Question 5 of 23

6. The speed of sound in air is about?

Question 6 of 23

7. Solids transmit sound at a speed of?

Question 7 of 23

8. In which of the following medium is sound transmitted fastest?

Question 8 of 23

9. The angle of reflection of a sound wave is equal to the angle of incidence?

Question 9 of 23

10. Reflected sound is called (from an obstacle)?

Question 10 of 23

11. Which of the following is a factor affecting velocity of sound in air?

Question 11 of 23

12. Which of the following is the most common use of reflection of sound?

Question 12 of 23

13. Does a vacuum transmit sound waves?

Question 13 of 23

14. Sound wave is which type of a wave?

Question 14 of 23

15. How do you calculate the distance in pulse echo technique?

Question 15 of 23

16. Sound originates from vibrating bodies. True or False?

Question 16 of 23

17. The velocity of sound in fresh water is?

Question 17 of 23

18. The velocity of sound in salty water is?

Question 18 of 23

19. Sound travels faster in HOT air than in COLD air?

Question 19 of 23

20. Which among the following is an application of pulse echo technique?

Question 20 of 23

21. Which of the following is NOT a source of sound?

Question 21 of 23

22. How is sound energy propagated from a vibrating object?

Question 22 of 23

23. Why is a sound wave a longitudinal wave?

Question 23 of 23