Question

What is the best description of the destructive interference of light?

The crest of one wave overlaps with the trough of another.


A mechanical wave meets an electromagnetic wave.


A longitudinal wave meets a transverse light wave.


The crests of two waves intersect.

Answer 1

The crest of one wave overlaps with the trough of another.

Answer 2

Destructive interference occurs when the maxima of two waves are 180 degrees out of phase: a positive displacement of one wave is cancelled exactly by a negative displacement of the other wave.

Answer:

The crest of one wave overlaps the trough of another.