InterviewSolution
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InterviewSolution
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A light ray is travelling from air to medium, c is velocity of light in air and v is velocity of light in medium. The reflected and refracted rays are perpendicular to each other. The angle of polarisation isA. `theta_(P) = tan^(-1)(v//c)`B. `theta_(P) = cos^(-1)(v//c)`C. `theta_(P) = cot^(-1)(v//c)`D. `theta_(P) = sin^(-1)(v//c)` |
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Answer» Correct Answer - C `v_(a) = c, v_(m) = v, theta_(P) = ?` `mu_(m) = (v_(a))/(v_(m)) = tan theta_(P)` `:. theta_(P) = tan^(-1)((v_(a))/(v_(m))) = tan^(-1)((c)/(v))` i.e. `theta_(P) = cot((v)/(c))` |
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