Question

Polarising angle for water is 53°4'. If light is incident at this angle on the surface of water and reflected, the angle of refraction is(a) 53°4'(b) 126°56'(c) 36°56'(d) 30°4'

Answer 1

(c) 36°56' is the angle ofrefraction.

Answer 2

Answer: (C) 36°56'

Explanation:

Given data

The light is incident at this angle on the surface of water and is reflected back.

Polarizing angle θp = 53°4'

To find

Angle of refraction:?

We know that

θp+r=90°

r=90-θp

= 90°-53°4'

=36°56'

Angle of refraction is 36°56'

Here,

θp is also called as Brewster's angle.

It is a angle which produces a different angle between the reflected ray and the retracted ray.

It is called as angle of polarization.

The case where polarized angle is equal to incident angle, the rays are said to be polarized.

The reflection coefficient is usually zero.