Failed to connect to MySQL: Access denied for user 'examnext_online'@'localhost' (using password: YES) A ray of light from a denser medium strikes a rarer at an angle of incidence I (see figure). The reflected and refracted rays make an angle of `90^o` with each other. The angles of reflection and refraction are r and r’. The critical angle is - Sarthaks eConnect
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Practice Online Test Series for JEE Main 2018 & NEET 2018

A ray of light from a denser medium strikes a rarer at an angle of incidence I (see figure). The reflected and refracted rays make an angle of `90^o` with each other. The angles of reflection and refraction are r and r’. The critical angle is


A.

`sin^-1 (tan r)`

B.

`sin^-1 (cot i)`

C.

`sin^(-1) (tan r’)`

D.

`tan^(-1) (sin i)`