Define wave surface,wavefront and wave normal.

A wavefront is

Define transverse wave.

Define:- Wave normal.

Define period of a wave?

Define wavelength of the wave .

Define matter wave

Define wavefront, wavenormal and a ray of light. What are the different types of wavefronts? How are they produced ?

Explain ground waves, space waves and sky waves propogation

What is wave ?

Define amplitude of the wave.