The angle of incidence at which reflected light is totally polarised for reflection from air to glass (refractive index n) is

Options

A. `sin^(-1)(n)`
B. `sin^(-1)(1//n)`
C. `tan^(-1)(1//n)`
D. `tan^(-1)(n)`

Answer

D

Explanation

Brevster's law: ordinary light is completely polarised in the plane of incidence when it gets replaced from transparent medium a particular angle known as the angle of polarization.
i.e. `n=tani_(p)`
`rArr i_(p)=tan^(-1) n`