When two waves with same frequency and constant phase differenc interfere,

Options

A. there is a gain of energy
B. there is a loss of energy
C. the energy is redistributed and the distribution remains constant in time
D. the energy is redistributed and the distribution changes with time

Answer

D

Explanation

When two waves with same frequency and constant phase difference interfere to each other, then after interference, intensity of resultant wave is distributed such that it is maximum at some points [constructive interference or bright fringes] and minimum at another points. [destructive interference or dark fringes]. Hence, energy is distributed and remains constant [in the form of bright and dark fringes]