Q. A ray of light strikes a material’s slab at an angle of incidence $60{^\circ}.$If the reflected and refracted rays are perpendicular to each other, the refractive index of the materials is
A) $\frac{1}{\sqrt{3}}$
B) $\frac{1}{\sqrt{2}}$
C) $\sqrt{2}$
D) $\sqrt{3}$
Explanation
(d) By Brewster’s law
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$\mu = \tan i_{p} = \tan{60{^\circ}} = \sqrt{3}$
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.