Electromagnetic radiation of frequency ν, wavelength λ in air, enters a glass slab of refractive index μ. The frequency, wavelength and velocity of light in the glass slab will be respectively:
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Question

Electromagnetic radiation of frequency ν, wavelength λ in air, enters a glass slab of refractive index μ. The frequency, wavelength and velocity of light in the glass slab will be respectively:

G1 Physics · Accepted Answer

Step 1: Frequency does not change at a boundary: ν_glass = ν_air = ν. Step 2: Speed in glass becomes c/μ. Step 3: λ_glass = v_glass/ν = λ_air/μ. Final answer: (C) (ν, λ/μ, c/μ).