PhysicsJEE Main 23 Jan 2026, Shift 2·Q19·MCQ·Easy–moderate

Wave Optics · Diffraction and polarisation

When an unpolarized light falls at a particular angle on a glass plate (placed in air), it is observed that the reflected beam is linearly polarized. The angle of refracted beam with respect to the normal is .
(

\tan^{-1}(1.52) = 57.7^\circ

, refractive indices of air and glass are 1.00 and 1.52, respectively)

(1) $39.6^\circ$
(2) $32.3^\circ$
(3) $42.6^\circ$
(4) $36.3^\circ$

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Wave Optics · Diffraction and polarisation

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