NEET UG PHYSICS MCQ: RAY OPTICS

1 Easy

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Application +4 | -1

A man is standing on a straight road in a summer noon. The refractive index of the air changes with height as

\mu=\mu_0\left(1+\frac{y}{3 \text {(metre)}}\right)

due to variation of the vertical temperature where

\mu_0

is the refractive index of the air at road surface and

y

height. Eyes of the man are at height of

1.5 \mathrm{~m}

above the road. What is the apparently visible length of the road.

View answer and explanation

Correct option: A

\frac{3}{\sqrt{5}}

Option D (

\frac{3}{\sqrt{5}}

) is correct because it represents the apparent visible length of the road calculated using the given refractive index variation with height.

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