Logo

Get Updates

Subscribe to receive instant notifications for new study materials and important updates.

Home» class 9»Science» Chapter 11: Sound

What is loudness of sound? What factors does it depend on? - Science

Question

What is loudness of sound? What factors does it depend on?

Answer

Loudness is the characteristic of sound that enables us to distinguish between a loud sound and a faint sound. It is a measure of the sound energy reaching the ear per second.

Factors it depends on:

  1. Amplitude of vibration: Loudness is proportional to the square of the amplitude. Higher amplitude means louder sound.

  2. Sensitivity of the ear: It also depends on how sensitive the listener's ears are to that sound.