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MHT CET 2019 (3 May, Shift 1) · Refraction, Glass Slab & Apparent Depth

Refraction, Glass Slab & Apparent Depth question from MHT CET 2019 (3 May, Shift 1)

Q66MHT CET 2019 · 3 MAY · SHIFT 1Easy

Refraction, Glass Slab & Apparent Depth

The refractive index of the material of crystal is 1.68 and that of castor oil is 1.2. When a ray of light passes from oil to glass, its velocity will change by a factor

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Answer: (d)

$v = \frac{c}{\mu} \Rightarrow \frac{v_{glass}}{v_{oil}} = \frac{\mu_{oil}}{\mu_{glass}}$
$= \frac{1.2}{1.68} = \frac{5}{7}$
So the answer is (d) $\frac{5}{7}$ .

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