When a wave crosses from one medium into another in which the wave speed is lower, the frequency is unchanged. The wavelength
A) increases.
B) decreases.
C) stays the same.

Question

Quizplus · Accepted Answer

When a wave crosses into a medium where the speed is lower, while its frequency remains unchanged, its wavelength decreases to maintain the wave speed equation v = fλ, where v is speed, f is frequency, and λ is wavelength.

When a Wave Crosses from One Medium into Another in Which