A coin is placed at the bottom of a cube of glass tern thick. If the refractive index of the glass is ? ? , how high does the coin appear to be raised to an...

A coin is placed at the bottom of a cube of glass tern thick. If the refractive index of the glass is $?$, how high does the coin appear to be raised to an observer looking perpendicularly into the glass?

Answer Details

Let apparent depth = X

$\mu$ = $\frac{t}{x}$ $\Rightarrow$ X = $\frac{t}{u}$

raised of coin = t - x

= t - $\frac{t}{\mu }$

= $\frac{t(\mu -I)}{\mu }$