Question

A body is vibrating in the air, and sound is produced as a result. What happens when the rate of vibration of the object increases?

• A. Frequency and pitch of the wave will increase.
• B. Frequency and pitch of the wave will decrease.
• C. Frequency of wave increase and pitch of wave will decrease.
• D. Frequency of wave decrease and pitch of wave will increase.

Answer 1

The correct option is A

Frequency and pitch of the wave will increase.

The frequency of vibration of a body is its rate of vibration.

As sound is the disturbance created by the object in the air. The greater the vibration of the object the higher will be the frequency of the sound produced. This means the number of compressions and rarefactions passing through a fixed point per unit time will also be higher.

Pitch is the frequency of a sound wave.