Physics Practice: Sound (Mock Test 2 - Intermediate)
1. The time taken by a vibrating body to complete one full vibration is its ________.
2. If the frequency of a sound wave increases, its ________ also increases.
3. Sound waves in air are ________ waves.
4. The relation between Frequency ($f$) and Time Period ($T$) is:
5. Which of the following determines the "Quality" or "Timbre" of a sound?
6. As the density of a medium increases, the speed of sound generally ________.
7. A shrill sound produced by a baby has a ________ than a deep voice of a man.
8. Echoes are caused by the ________ of sound waves.
9. The speed of sound is highest in ________ at room temperature.
10. If the distance from the sound source is doubled, the loudness ________.
11. Sound with a frequency of $10 \text{ Hz}$ is called ________ sound.
12. The distance between two consecutive compressions in a sound wave is the ________.
13. Which of the following animals uses infrasonic sound to communicate?
14. Speed of sound in air ________ with an increase in humidity.
15. A 'Note' consists of several ________ mixed together.
16. Large empty halls produce more reverberation because they have ________ reflecting surfaces.
17. $1 \text{ kilohertz (kHz)}$ is equal to ________ vibrations per second.
18. We can distinguish the voice of a friend from others even in the dark because of ________.
19. If a sound is $80 \text{ dB}$, it is generally considered ________.
20. The speed of sound in water is approximately ________.