MHT CET Physics question
If a ray of light in a denser medium strikes a rarer medium at an angle of incidence , the angles of reflection and refraction are respectively, and . If the reflected and refraction rays are at right angles to each other, the critical angle for the given pair of media is
Answer: (A),(B)
Solution
Reflected and refracted rays at right angles give with , so Snell's law gives , hence $C =
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