As a wave passes from one medium into another, it often happens that its speed increases with no change in frequency. Under these circumstances, the wavelength
A) increases.
B) decreases.
C) stays the same.

Question

Quizplus · Accepted Answer

When a wave's speed increases as it passes from one medium to another without a change in frequency, its wavelength increases. This is because wavelength is directly proportional to the wave's speed when the frequency remains constant (wavelength = speed/frequency).

As a Wave Passes from One Medium into Another, It