Sound – Online MCQs – Physics 10th

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

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

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

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

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

6. The loudness of sound varies directly with the vibrating body:

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

8. Loudness depends upon:

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

10. Sound is a form of:

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

12. The cause of the echo is:

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

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

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

16. Sound waves Cannot pass through

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

18. The loudness and amplitude of sound vary:

19. Pitch depends upon:

20. Sound waves are: