Question

A light wave enter a glass boundary at angle x if the reflected wave is complete plain polarised, find the value of x given that the refractive index of the glass is 1.33?

Answer 1

`53.05^@`

Explanation:

Here,the angle `theta` is known as Brewster's angle,after falling at which,reflected ray gets plain polarized.

Now,this angle is given as `theta= tan^-1((mu_2)/(mu_1))` where, `mu_2` is the refractive index of the medium in which light has entered and `mu_1` is the refractive index of the medium through which light was initially propagating.

Given,`(mu_2)/(mu_1)=1.33`

So,`theta=tan^-1(1.33)=53.05^@`