The frequency of a wave is determined by the source of the wave, but wavelength is not. Wavelength depends on the medium through which the wave propagates.

Question

Quizplus · Accepted Answer

The frequency of a wave is indeed determined by its source and remains constant when the wave moves from one medium to another. However, the wavelength can change when the wave enters a different medium because the speed of the wave changes, while the frequency remains the same.

The Frequency of a Wave Is Determined by the Source