State the principle of superposition of waves.

Explanation

Characteristics or properties of a stationary wave:
(1) In a region where a stationary wave is formed, the particles of the medium (except at the nodes) perform SHM of the same period, but their amplitudes vary periodically in space from particle to particle.
(2) The overall appearance of a stationary wave is of alternate Intensity maximum (displacement antinode) and minimum (displacement node)
(3) The distance between adjacent nodes (or antinodes) is `pi//2`
(4) The distance between successive node and antinode is `pi//4`
(5) There is no progressive change of phase from particle to particle. All the particles in one loop (between two adjacent nodes) vibrate in the same phase, while the particles in adjacent loops are in opposite phase.
(6) A stationary wave does Hot propagate in any direction and hence does not transport energy through the medium.