Question

If a rectangular tank of depth 8 metre is full of water $\mu =\frac{4}{3}$, then the bottom is seen at a depth of___metres.

Answer 1

Given,

Depth of tank = $8m$

Refractive index, $\mu =\frac{4}{3}$

We know that, $\mu =\frac{\text{Real Depth}}{\text{Apparent Depth}}$

or, $\text{Apparent depth}=\frac{\text{Real Depth}}{\mu }$

$=\frac{8m}{4/3}=6m$