Sound – Online MCQs – Physics 10th

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

2. Sound waves Cannot pass through

3. Ultrasound has several uses in medicine and industry. Which one has the use of ultrasound?

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

5. Pitch depends upon:

6. It is extensively used in marine applications.

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

8. Frequency of infrasonic waves is __________ than the frequency of ultrasound waves.

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

10. Sound waves are:

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

12. The speed of sound varies with

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

14. Humidity increases, the density of the air _______ and sound travels _________.

15. To propagate, sound needs a material medium of:

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

17. Sound waves are produced by:

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

19. Loudness depends upon:

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