Question

Distinguish between progressive waves and stationary waves.

Answer 1

Progressive waves	Stationary waves
In a progressive wave, the disturbance travels form one region to the other with definite velocity	In stationary waves, disturbance remains in the region where it is produced, velocity of the wave is zero.
Amplitudes of all particles are same.	Amplitudes of particles are different.
In a progressive wave, this does not happen.	All the particles cross their mean positions simultaneously.
All the particles are moving	In stationary waves particles at the position of nodes are always at rest.
Energy is transmitted from one region to another.	There is no transfer of energy.
Phases of adjacent particles are different.	All particles between two consecutive nodes are moving in the same direction and are in phase while those in adjacent loops are moving in opposite directions and differ in phase by 180q.