Sound – Online MCQs – Physics 10th

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

2. Loudness depends upon:

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

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

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

6. The cause of the echo is:

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

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

9. It is extensively used in marine applications.

10. The loudness and amplitude of sound vary:

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

12. As compared to air, the speed of sound in liquids and solids is

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

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

15. The speed of sound varies with

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

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

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

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

20. Sound waves are: