Question

A ray of light is incident of the surface of a glass plate at an angle of incidence equal to Brewster's angle \(\Phi\). If \(μ\) denotes the refractive index of glass w.r.t. air, then what will be the angle between reflected and refracted rays?

• A. \(90^{\circ}-sin^{-1}(sin\Phi /μ)\)
• B. \(90^{\circ}\)
• C. \(sin^{-1}(μcos\Phi )\)
• D. \(90^{\circ}+\Phi\)

Hint:

At Brewster angle the reflected and refracted rays are perpendicular.

Answer 1

The Correct Option is B

Step 1: Remember the fact
At Brewster angle, reflected light is completely plane polarised, and the reflected and refracted rays are at right angles. Option (B).

Final Answer:
Option (B). \[ \boxed{\text{(B)}} \]