Physics Practice: Propagation of Sound Waves (Mock Test 1 - Basic)
1. Sound is a form of energy which produces the sensation of ________ in our ears.
2. Sound waves are produced by ________ bodies.
3. Sound waves require a ________ for their propagation.
4. Sound waves cannot travel through ________.
5. In air, sound travels as ________ waves.
6. A region of high pressure and high density in a longitudinal wave is called a ________.
7. The distance between two consecutive compressions or rarefactions is called ________.
8. The maximum displacement of a particle from its mean position is called its ________.
9. The number of vibrations per second is called ________.
10. The S.I. unit of frequency is ________.
11. The relation between velocity ($V$), frequency ($f$), and wavelength ($\lambda$) is:
12. The speed of sound is maximum in ________ and minimum in ________.
13. With an increase in temperature, the speed of sound in air ________.
14. The speed of sound in dry air at $0^\circ\text{C}$ is approximately ________.
15. Sound waves with frequencies below $20\text{ Hz}$ are called ________.
16. The range of audible frequencies for a normal human ear is ________.
17. Which of the following factors does NOT affect the speed of sound in air?
18. Waves produced on the surface of water when a stone is dropped are ________ waves.
19. In a transverse wave, the particles of the medium vibrate ________ to the direction of propagation.
20. Bats use ________ waves to detect obstacles in their path.