Q. When light waves pass from air to glass, the variables affected are

A
Wavelength, frequency and velocity
B
Velocity and frequency
C
Wavelength and frequency
D
Wavelength and velocity
Solution:

What happens is that light slows down when it passes from the less dense air into the denser glass or water. This slowing down of the ray of light also causes the ray of light to change direction. It is the change in the speed of the light that causes refraction.

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