Question

When a container is completely filled with water ( n_{​​​​​​w} = 4/3 ) it's bottom appears raised by 4cm. Find the actual depth of water.

Answer 1

Refractive index =real depth /apparent depth
Given
Refractive index =4/3
Apparent depth =4cm
Putting these values in above formula we get
4/3=actual depth/4
Actual depth=4*4/3
=16/3=5.33 cm