Question

Define the amplitude of a wave. Show it graphically. What does the amplitude of a wave describe?

Answer 1

The amplitude of a wave -

1. The amplitude of a sound wave is the measure of the height of the wave.
2. The amplitude of a sound wave can be defined as the loudness or the amount of maximum displacement of vibrating particles of the medium from their mean position when the sound is produced.
3. It is the distance between the crest or trough and the mean position of the wave.

Graphically -

The amplitude of a wave describes the maximum amount of displacement of a particle on the medium from its resting position.