A glass slab consists of thin uniform layers of progressively decreasing refractive

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A glass slab consists of thin uniform layers of progressively decreasing refractive indices refractive index such that the refractive index of any layer is μ-m∆μ. Here μ and ∆μ denote the refractive index of 0th layer and the difference in refractive index between any two consecutive layers, respectively. The integer m=0,1,2,3,…… denotes the numbers of the successive layers. A ray of light from the 0th layer enters the 1st layer at an angle of incidence of 30⁰. After undergoing the mth refraction, the r

Options

(a) 20
(b) 30
(c) 40
(d) 50

Correct Answer:

50

Explanation:

No explanation available. Be the first to write the explanation for this question by commenting below.

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Topics: Ray Optics (94)
Subject: Physics (2479)

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