A ray of light from a denser medium stri...

A ray of light from a denser medium strikes a rarer medium at an angle of incidence i. if the reflected and the refracted rays are mutually perpendicular to each other, what is the value of the critical angle ?

`sin^(-1)(tani)`

`cos^(-1)(tani)`

`cot^(-1)(tani)`

`cosec^(-1)(tani)`

Text Solution

Verified by Experts

The correct Answer is:

`""_(d)mu_(r)=tani,""_(r)mu_(d)=1/(sinC)`

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