Physics Practice: Propagation of Sound Waves (Mock Test 2 - Intermediate)
1. The distance between a compression and its adjacent rarefaction is ________.
2. Which property of sound wave determines its pitch?
3. Sound travels faster on a humid day than on a dry day because ________.
4. The time taken by a particle to complete one full vibration is called ________.
5. Sound waves in solids are ________.
6. A frequency of $50\text{ Hz}$ means the source vibrates ________ times in $2\text{ seconds}$.
7. The quality (timbre) of sound depends on its ________.
8. A tuning fork of frequency $256\text{ Hz}$ produces waves of wavelength $1.3\text{ m}$. The speed of sound is:
9. Waves which do not require any medium for propagation are ________ waves.
10. The speed of sound in water is approximately ________.
11. If the frequency of a sound wave is doubled, its wavelength becomes ________.
12. Ultrasonic waves have frequency ________ $20,000\text{ Hz}$.
13. For a wave, $f \times T$ is always equal to ________.
14. The loudness of sound depends on the ________ of the vibrating body.
15. SONAR makes use of ________ waves.
16. The wavelength of a sound wave is the distance between ________ crests.
17. Galileo observed that the ________ of sound is the same for all frequencies in a given medium.
18. Sound cannot be heard on the Moon because ________.
19. In compression, the density of the medium is ________ than the normal density.
20. In the formula $V = f \lambda$, if $V$ is constant, then $f$ is ________ proportional to $\lambda$.