alleryBrewster's angle θ_B for light hitting glass (n = 1.5) from air satisfies:
Atan θ_B = 1.5
Bsin θ_B = 1.5
Ccos θ_B = 1.5
Dθ_B = 90 degrees
Answer & Solution
Correct answer: A. tan θ_B = 1.5
At Brewster's angle, reflected light is fully polarized (perpendicular to plane of incidence).
tan θ_B = n = 1.5, so θ_B ≈ 56.3 degrees.
The reflected and refracted rays are perpendicular.
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