Question

if the Brewster's angle is 30° then the refractive index of the material is​

Answer 1

One by square root of 3

Answer 2

Answer:

The refractive index of the material is $n = 0.577$.

Explanation:

Brewster's law states that the maximum polarization of  light is achieved when the ray is incident on the surface such that the angle between the reflected and refracted rays is $90$°. The angle of incidence of the light in this case is known as Brewster's angle or polarization angle $(i_{p} )$.

Brewster's angle or polarising angle $(i_{p} )$

Given :

    ​$(i_{p} ) = 30$

Refractive index

$n = tani_{p}$

$n = tan30$°

     $n = \frac{1}{\sqrt{3} }$

$n = \frac{1}{1.732}$

$n = 0.577$

Therefore, the refractive index of the material is $n = 0.577$.

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