Question

define amplitude of vibration. How it is releated with loudness of a sound

Answer 1

amplitude is the displacement of sound wave above or below the pitch.......
loudness is directly proportional to amplitude

Answer 2

Hey there! ☺☻☺

♣ Amplitude of Vibration:

Amplitude of vibration is the displacement between the mean and extreme positions of a vibrating body.

♣ Relation b/w loudness and amplitude:

$\boxed{\boxed{\bold{Loudness \propto (Amplitude)^2}}}$

Hope It helps You! ☺☻☺