When light travels from air into water,
A)its velocity,wavelength and frequency all change.
B)its velocity changes,but its frequency and wavelength do not change.
C)its frequency changes,but its velocity and wavelength do not change.
D)its velocity and wavelength change,but its frequency does not change.
E)its wavelength changes,but its velocity and frequency do not change.

Question

Quizplus · Accepted Answer

When light moves from air into water, its speed decreases because water has a higher refractive index than air. This change in speed also leads to a change in wavelength. However, the frequency of light remains constant because it is determined by the source of the light and does not change when light moves between mediums.

When Light Travels from Air into Water