Question

A ray of unpolarised light is incident on the surface of glass plate of µ = 1.54 at polarising angle, then angle of refraction is

Options

• 57°

• 43°

• 90°

• 33°

Answer 1

33°

Explanation:

As tan ip = `mu` = 1.54

ip = 57°

Angle of refraction r = 90° – ip = 90° – 57° = 33°