For two identical rays of light to interfere destructively,their path lengths
A)must be equal.
B)must differ by an odd number of half wavelengths.
C)must differ by an even number of half wavelengths.
D)must differ by an integral number of wavelengths.
E)need not satisfy any of these conditions.

Question

Quizplus · Accepted Answer

Destructive interference occurs when the path length difference between two waves is an odd multiple of half wavelength. So, for two identical rays of light to interfere destructively, their path lengths must differ by an odd number of half wavelengths.

For Two Identical Rays of Light to Interfere Destructively,their Path