Question

what is stationary wave or standing wave​

Answer 1

Explanation:

In physics, a standing wave, also known as a stationary wave, is a wave which oscillates in time but whose peak amplitude profile does not move in space. The peak amplitude of the wave oscillations at any point in space is constant with time, and the oscillations at different points throughout the wave are in phase.

Answer 2

☃️ $\sf\underline\pink{ Stationary \: \: Wave }$ :- When two progressive waves travelling in opposite direction along a line are super imposed then the waves formed are called stationary waves.