Sound – Online MCQs – Physics 10th

1. Sound waves are produced by:

2. The S.I unit sound of intensity is:

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

4. Loudness depends upon:

5. Sound with frequencies below the lower limit of the human range of audibility is known as:

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

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

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

9. The reflection of sound is called

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

11. Pitch depends upon:

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

13. Quality of sound that distinguishes between a shrill and q flat sound is called:

14. The speed of sound varies with

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

16. The technique used to locate underwater depths or locating objects lying deep on the ocean floor is called:

17. Sound waves Cannot pass through

18. The separation between two consecutive compressions of the sound wave is called:

19. It is extensively used in marine applications.

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