A ray originates in flint glass ( )

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

Problem

A ray originates in flint glass (n=1.60n=1.60), enters crown glass (n=1.50n=1.50) and then meets the crown glass–air interface. What minimum angle of incidence in flint glass will cause the ray to undergo total internal reflection at the crown glass–air boundary? (a) 41.8∘41.8^{\circ} (b) 35.9∘35.9^{\circ} (c) 38.7∘38.7^{\circ} (d) 45.3∘45.3^{\circ}

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