Sounds 1

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

Question 1 of 23

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

Question 2 of 23

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

Question 3 of 23

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

Question 4 of 23

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

Question 5 of 23

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

Question 6 of 23

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

Question 7 of 23

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

Question 8 of 23

9. The speed of sound in air is about?

Question 9 of 23

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

Question 10 of 23

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

Question 11 of 23

12. Sound wave is which type of a wave?

Question 12 of 23

13. Sound waves obey the laws of reflection?

Question 13 of 23

14. The velocity of sound in air:

Question 14 of 23

15. Solids transmit sound at a speed of?

Question 15 of 23

16. Define reverberation?

Question 16 of 23

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

Question 17 of 23

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

Question 18 of 23

19. Why is a sound wave a longitudinal wave?

Question 19 of 23

20. The velocity of sound in salty water is?

Question 20 of 23

21. The velocity of sound in fresh water is?

Question 21 of 23

22. Does a vacuum transmit sound waves?

Question 22 of 23

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

Question 23 of 23