A ray of unpolarised light is incident on the surface of a glass plate of refractive index 1.54 at the polarising angle. If `tan 57^@C=1.54`, then the angle of refraction in glass is

Options

A. `57^(@)`
B. `43^(@)`
C. `33^(@)`
D. `90^(@)`

Answer

C

Explanation

`i_p=57^(@) " " :. r=90^(@)-57^(@)=33^(@)`