100+ Physics Sound Questions and Answers - 2

Question: 6

Define frequency of vibration?

Frequency is the number of vibrations produced in one second by a vibrating body.

The unit of frequency is hertz (Hz).

Question: 7

How do we hear sound?

When sound travels in air, the air vibrates and transmit the sound. When these vibrations reach our ear, similar vibrations are produced in the ear drum and we hear the sound when the auditory nerve takes these vibrations to the brain.

Question: 8

Give the names of any two percussion instruments?

Mridhangam and Tabla

Question: 9

How is sound produced?

Sound is produced when objects vibrate.

Question: 10

Define period of oscillation?

The time taken by the vibrating body to make one full vibration or oscillation is called period of oscillation (T).