When light crosses the boundary between media, the characteristic of the light that remains unchanged is
A) frequency.
B) speed.
C) wavelength.
D) None of the above.

Question

Quizplus · Accepted Answer

When light crosses the boundary between two different media, its frequency remains unchanged. The speed and wavelength of light can change due to the change in the medium's refractive index, but the frequency is determined by the source of the light and does not change.

When Light Crosses the Boundary Between Media, the Characteristic of the Light