Sound – Online MCQs – Physics 10th

1. The speed of sound varies with

2. The sensation of sound persists in our brain for about

3. To hear g clear echo, the time interval between the produced original sounds and the reflected one must be at least:

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

5. Loudness depends upon:

6. Bats can hear frequencies up to:

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

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

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

10. The loudness and amplitude of sound vary:

11. On what factor does the quality of sound depend?

12. The approximate value of the speed of sound in air at 0°C temperature is:

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

14. At a temperature of 20°C, the speed of sound is:

15. The speed of sound is the same in al! mediums. This statement is:

16. Sound travels faster in solid as compared to gases because of:

17. Which types of waves cannot travel through a vacuum?

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

19. A safe level of noise depends on

20. Sound waves are: