Sound – Online MCQs – Physics 10th

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

2. Sound waves are produced by:

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

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

5. It is extensively used in marine applications.

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

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

8. A safe level of noise depends on

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

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

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

12. Sound waves Cannot pass through

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

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

15. Bats can hear frequencies up to:

16. The reflection of sound is called

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

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

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

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