Question

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

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

a longitudinal wave meets a transverse light wave.

the crests of two waves intersect.

a mechanical wave meets an electromagnetic wave.

Explanation:

Destructive interference for light (a wave phenomenon) occurs when the peak (crest) of one wave aligns with the valley (trough) of another, canceling out or reducing the combined wave amplitude. The other options describe irrelevant wave interactions or constructive interference (crest-crest overlap).

Answer:

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