Question

A bird is flying 12 m above the surface of a pond. what is the apparent position of the bird as viewed by a fish 1 m below the surface? $({}_a{\mu }_w=\frac{4}{3})$

• A. 15 m
• B. 17 m
• C. 13 m
• D. 16 m

Answer 1

The correct option is B 17 m

Real depth of bird = 12 m
as $\mu =\frac{realdepth}{apparentdepth}$
$\frac{4}{3}=\frac{12}{a}$
$a=12/\frac{3}{4}=16m$
Hence bird is 16 m above surface of water and 17 m above the fish as visible to fish.