MHT CET 2023 Physics question
A beam of light is incident on a glass plate at an angle of . The reflected ray is polarized. If angle of incidence is then angle of refraction is (Given , )
Answer: (A)
Solution
The reflected ray is fully polarized when the angle of incidence equals the Brewster (polarising) angle, so and the refractive index of glass is . For incidence at , Snell's law gives , so $ r = =
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