Optics 2 Question 17
17. A transparent slab of thickness has a refractive index that increases with . Here, is the vertical distance inside the slab, measured from the top. The slab is placed between two media with uniform refractive indices and , as shown in the figure. A ray of light is incident with angle from medium 1 and emerges in medium 2 with refraction angle with a lateral displacement .
(2016 Main)
Which of the following statement(s) is (are) true? (a)
(b)
(c)
(d)
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Answer:
Correct Answer: 17. (a, c, d)
Solution:
- From Snell’s law,
Further,