If V is the velocity of the wave and `omega` is the angular velocity then the propagation constant (K) of the wave is given by

Let velocity of a sound wave be 'v' and 'omega' be angular velocity. The propagation constant of the wave is

The ratio of angular velocity to the propagation constant of the medium is

The dimensions of the propagation constant of the wave is

The propagation constant of a wave is also calle its

SI unit of angular wave number or propagation constant is

Velocity of de Broglie wave is given by :

Velocity OF a Wave

A plane electromagnetic wave propagates in a medium moving with constant velocity Vlt lt c relative to an interial frame K . Find the velocity of that wave in the frame K if the refractive index of the medium is equal to n and the propagation direction of the wave coincides with that of the medium.

The speed of wave of time period T and propagation constant K is