A ray of light is incident on the hypotenuse of a right-angled prism after travelling parallel to the base inside the prism. If µ is the refractive index of the material of the prism, the maximum value of the base angle for which light is totally reflected from the hypotenuse is

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Examsnet · Accepted Answer

Correct Answer is : cos−1(‌1µ)

EAMCET Engineering 2003 Solved Paper