Sound Class 8 MCQs Questions with Answers

1. Sound cannot travel through

2. The number of vibrations made by a vibrating body in one second is

3. The number of oscillations per second is called

4. The voice box is also called as

5. The maximum displacement of a body from its mean position is called

6. Pitch of sound is determined by its

7. The hearing range of human ear is

8. Sound is produced by

9. Vibration is also known as

10. The frequency of subsonic sound is

11. The velocity of sound at 20°C is approximately

12. Voice of man is heavy compared to a woman because

13. When the amplitude of vibration is large, sound produced is

14. Frequency is expressed in

15. Sound is a kind of

16. Loudness of sound is determined by

17. 1 hertz is equal to

18. Cochlea is a part of

19. The sound in the audible range is called

20. A pendulum oscillates 20 times in 4 seconds. Find its time period.