A ray of light is lncident on a glass plate at `60^(@)`. The reflected and refracted rays are found to be mutually perpe:ndiwlar. The refractive index of the glass is

Options

A. 2
B. 1.73
C. 1.5
D. 1.15

Answer

B

Explanation

The reflected and retracted rays are perpendicular , it means the angle of incidence is equal to polarsing angle `(i_(p))`
`therefore mu tan i_(p) = tan 60^(@)`
` = sqrt(3) = 173`