Which of the following is a necessary condition for the production of stationary waves, as opposed t

Question

Which of the following is a necessary condition for the production of stationary waves, as opposed to beats?

Professor PC Thomas Classes · Answer

(a) : Stationary (standing) waves are formed by the superposition of two waves of the same frequency and amplitude travelling in opposite directions. In contrast, beats are formed by the superposition of two waves of slightly different frequencies travelling in the same direction.