Sound – Online MCQs – Physics 10th

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

2. Sound waves Cannot pass through

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

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

5. Loudness depends upon:

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

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

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

9. If a wave completes 20 vibrations in 2.5s, then its frequency is:

10. Bats can hear frequencies up to:

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

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

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

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

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

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

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

18. Sound waves are:

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

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