Sound – Online MCQs – Physics 10th

1. Sound is a form of:

2. Pitch depends upon:

3. Generally, we classify ultrasound as those having frequencies above:

4. Sound waves are produced by:

5. The order of speed of the sound in different mediums from faster to slowest is:

6. On increasing the temperature, the speed of sound in air:

7. Sound waves Cannot pass through

8. The sound with frequencies above the upper limit of the human range of audibility is known as:

9. The two factors that affect the speed of sound in the air are:

10. The unit of quantity on which the pitch of the sound depends is:

11. Audible frequencies range that a normal human ear can detect is:

12. When the frequency of sound increases, the wavelength and period

13. The speed of sound depends on the properties such as:

14. For hearing clear echoes, the minimum distance of the obstruction from the source of sound should be:

15. As compared to air, the speed of sound in liquids and solids is

16. The speed of sound in air is directly proportional to the square root of the:

17. The loudness and amplitude of sound vary:

18. The cause of the echo is:

19. Sound waves are:

20. Over an eight-hour workday, the noise level recommended in most countries is usually: