Question

What is the relation between loudness and amplitude of sound? | Class 8 |

Answer 1

Sound waves with a large amount of energy have a larger amplitude which increases the loudness in the wave. The larger an amplitude of a wave the louder the sound and the lower the amplitude of the wave the softer the sound.

Answer 2

Hey there!

Relation between Loudness and Amplitude:

Loudness is directly proportional to square of the amplitude.

i.e Loudness ∝ (Amplitude)²

Example:

When a body vibrates with a greater amplitude, it sends forth a greater amount of energy and hence the energy received by the eardrum is large, so the sound appears louder.

Hope It Helps You!