The angle of polarisation for a medium is

PHYSICS · Single correct · CBSE · Physics · Ray Optics and Optical Instruments · Ray Optics and Optical Instruments

Problem

The angle of polarisation for a medium is 60∘60^\circ. What is its critical angle? (a) sin⁡−13\sin^{-1}\sqrt{3} (b) tan⁡−13\tan^{-1}\sqrt{3} (c) cos⁡−13\cos^{-1}\sqrt{3} (d) sin⁡−113\sin^{-1}\frac{1}{\sqrt{3}}

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