When a ray of light enters one medium from another medium, which quality will not change

Question

Quizplus · Accepted Answer

The frequency of light remains constant when it transitions between different media. This is because frequency is determined by the source of the light and does not change when light moves from one medium to another. Changes in speed and wavelength occur due to the change in the medium's refractive index, and the direction can change due to refraction, but the frequency remains unchanged.

When a Ray of Light Enters One Medium from Another