Sound Class 8 MCQs Questions with Answers

1. The number of oscillations per second is called

2. Sound is produced by

3. The frequency of subsonic sound is

4. The voice box is also called as

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

6. The hearing range of human ear is

7. Sound cannot travel through

8. 1 hertz is equal to

9. Vibration is also known as

10. Pitch of sound is determined by its

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

12. Sound is a kind of

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

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

15. Cochlea is a part of

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

17. Frequency is expressed in

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

19. Loudness of sound is determined by

20. The sound in the audible range is called