Sound Class 8 MCQs Questions with Answers

1. Frequency is expressed in

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

3. Sound cannot travel through

4. Sound is produced by

5. Vibration is also known as

6. The voice box is also called as

7. The frequency of subsonic sound is

8. The number of oscillations per second is called

9. The sound in the audible range is called

10. The hearing range of human ear is

11. Cochlea is a part of

12. Pitch of sound is determined by its

13. Sound is a kind of

14. Loudness of sound is determined by

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

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

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

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

19. 1 hertz is equal to

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