When a beam of light,originally traveling in air,enters a piece of glass having an index of refraction of 3/2,its frequency
A)increases by a factor of 3/2.
B)is reduced to 2/3 its original value.
C)is unaffected.

Question

Quizplus · Accepted Answer

The frequency of light is not affected by the change in medium. Only the wavelength and speed of light changes, as determined by Snell's law (n1sinθ1 = n2sinθ2) and the equation c = λf (where c is the speed of light, λ is the wavelength, and f is the frequency). Therefore, when light enters a material with a higher index of refraction, its speed decreases and its wavelength decreases, but its frequency remains same.

When a Beam of Light,originally Traveling in Air,enters a Piece