A transparent slab of thickness d has a refractive index n (z) that increases with z. Here z is the

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A transparent slab of thickness d has a refractive index n (z) that increases with z. Here z is the verticalÂ distance inside the slab, measured from the top. The slab is placed between two media with uniformÂ refractive indices n₁ and n₂ (> n₁ ), as shown in the figure. A ray of light is incident with angleÂ ${Î¸}_{i}$ fromÂ medium 1 and emerges in medium 2 with refraction angle Â ${Î¸}_{f}$ with a lateral displacement l.

Which of the following statement (s) is (are) true?

Accepted Answer

From Snellâ€™s Law n1Â sinÎ¸i=n(d)Â sinÎ¸d=n2Â sinÂ Î¸f The deviation of ray in the slab will depend on n (z) Hence, l will depend on n (z) but not on n2Â

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