The characteristics of the medium required for propagation of sound in a medium are โ
(a) Theย medium must be elasticย so that it’s particles may come back to their initial position after displacement on either side, i.e., the particles are capable of vibrating about their mean position.
(b) Theย medium must have inertiaย so that it’s particles may store mechanical energy.
(c) Theย medium should be frictionlessย so that there is no loss of energy in propagation of sound through it.