Question

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

Answer 1

Given,

Depth of tank, h = $8m$Refractive index $\mu =\frac{4}{3}$
let the apparent depth be h'
The refractive index of a medium is also given by $=\frac{\text{Real depth}}{\text{Apparent depth}}$.