The propagation constant of a wave is also calle its

The dimensions of the propagation constant of the wave is

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

Molal clevation constant is also called as

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

Assertion : Longitudinal waves are also known as pressure waves. Reason : Because propagation of these waves in air causes changes in pressure and volume of the air.

A plane sound wave is travelling in a medium. In reference to a frame A, its equation is y=a cos (omegat-kx) . Which refrence to frame B, moving with a constant velocity v in the direction of propagation of the wave, equation of the wave will be