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Physics-

General

Easy

Question

An observer can see through a pin-hole the top end of a thin rod of height h, placed as shown in the figure The beaker height is 3h and its radius h When the beaker is filled with a liquid up to height 2h, he can see the lower end of the rod Then the refractive index of the liquid is

$\frac{5}{2}$
$\sqrt{\frac{5}{2}}$
$\sqrt{\frac{3}{2}}$
$\frac{3}{2}$

The correct answer is: $square root of fraction numerator 5 over denominator 2 end fraction end root$

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