When a light ray incidents on the surface of a medium, the...

When a light ray incidents on the surface of a medium, the reflected ray is completely polarized. Then the angle between reflected and refracted rays is

Options

A $45^{{}^{\circ}}$
B $90^{{}^{\circ}}$
C $120^{{}^{\circ}}$
D $180^{{}^{\circ}}$

Correct answer

B. $90^{{}^{\circ}}$

Step-by-step solution

According to Brewester's law if the reflected ray is completely polarized, then the reflected and refracted ray is perpendicular to each other. Thus,

\theta=90^{{}^{\circ}}

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