The angle of incidence at which, reflected ray is totally polarised for reflection from air to glass (refractive index =n) is:
A
sin−1n
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B
sin−11n
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C
tan−11n
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D
tan−1n
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Solution
The correct option is Dtan−1n The condition for this to work is that the refelected ray and refracted ray should perpendicular to each other i.e.,θt=90−θi