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

Question

Quizplus · Accepted Answer

When a beam of light travels from air to a piece of glass with a higher refractive index, its wavelength decreases according to the formula λ = λ₀/n, where λ is the new wavelength, λ₀ is the original wavelength in air, and n is the refractive index of the glass. Therefore, in this case, the new wavelength is λ = λ₀/(3/2) = (2/3)λ₀, which means the wavelength is reduced to 2/3 its original value.

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