Light travels through a glass plate of thickness t and having a refractive index μ. If c is the velocity of light in vacuum, the time taken by light to travel this thickness of glass is (a) (t)/(μ c) (b) (μ t)/(c) (c) tμ c (d) tc/μ

Answer: (b). Speed in glass v = c/μ. Time = t/v = (μ t)/(c) So the answer is (b) (μ t)/(c).

Light travels through a glass plate of thickness t and having a… | NEET 1996 (AIPMT)

Q82NEET 1996 · AIPMTEasy

Refraction, Glass Slab & Apparent Depth

Light travels through a glass plate of thickness $t$ and having a refractive index $\mu$ . If $c$ is the velocity of light in vacuum, the time taken by light to travel this thickness of glass is

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Answer: (b)

Speed in glass $v = \frac{c}{\mu}$ .
Time $= \frac{t}{v} = \frac{\mu t}{c}$
So the answer is (b) $\frac{\mu t}{c}$ .

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Refraction, Glass Slab & Apparent Depth question from NEET 1996 (AIPMT)

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