When light travels from one medium into a different medium with a different index of refraction,
A)the frequency, wavelength, and speed all change.
B)the frequency and wavelength change but the speed stays the same.
C)the speed and wavelength change but the frequency stays the same.
D)the speed and frequency change but the wavelength stays the same.
E)only the speed changes; the frequency and the wavelength stay the same.

Question

Quizplus · Accepted Answer

When light moves from one medium to another with a different index of refraction, its speed and wavelength change due to the change in the medium's optical density. However, the frequency of the light remains constant because it is determined by the source of the light and does not change when crossing into different media.

When Light Travels from One Medium into a Different Medium