InterviewSolution
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InterviewSolution
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A transparent slab of thickness d has a refractive index n(z) that increases with z. Here z is the vertical distance inside the slab, measured from the top. The slab is placed between two media with uniform refractive indices n_(1) and n_(2) (gtn_(1)), as shown in the figure. A ray of light is incident with angle theta_(i), from medium 1 and emerges in medium 2 with refraction and theta_(f), with a lateral displacement l. Which of the following statement(s) is (are) true ? |
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Answer» l is independent of `n_(2)` Using Snell.s law `mu sin theta= const`, we can understand that option (b) is correct. Bending of LIGHT in medium will depend on how n(z) varies with the height. Hence, option (c) is wrong. We can understand that if option (b) is correct then (d) cannot be correct. Option (d) is wrong. Only options (a) and (b) are correct. |
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