The phase difference between a crest of a wave and the adjacent trough is
A) 2 $\pi$ rad.
B) $\pi$ rad.
C) $\pi$ /2 rad.
D) $\pi$ /4 rad.
E) 0 rad.

Question

Quizplus · Accepted Answer

The phase difference between a crest and a trough of a wave is $\pi$ radians (or 180 degrees) because a complete cycle (crest to crest or trough to trough) is $2\pi$ radians, and a trough is halfway through the cycle from a crest.

The Phase Difference Between a Crest of a Wave and the Adjacent