Question

A bird sits on a branch of a tree at a height 40 cm from the surface of water and

sees a fish which is at depth of 16 cm from the free surface of water. If refractive

index of water is 4/3, calculate the apparent distance of fish seen by the bird.​

Answer 1

Explanation:

Correct option is

D

6.0m

Let apparent height of bird flying above water be x,

real depth / Apparent depth =

μ

1

⇒

x

3.6

=

4

3

⇒x=4.8m

So,

Apparent height of bird to the fish is =(4.8+1.2)m

=6.0m