What is stationary wave and how is it produced? State the characteristics of such wave.

What is supersonic waves?

What is wavefront of a wave?

Mention two characteristics of electromagnetic waves.

Mention two characteristics of electromagnetic waves.

A wave represented by the equation y = A cos (ks - omega t) superposes on another wave to produce a stationary wave with a node at s = 0 . What is the equation of this second wave ?

What is wave number?

If wavelength of a stationary wave is lamda then write the distance between two consecutive antinodes .