Question

A water tank has a height 21m. Water
of refractive index 4/3 is filled in it
upto a certain height. Find the height
upto which the water is filled so that
an observer looking from above will find
the tank to be half filled
1) 14 m 2) 7.2 m
3) 10.5 m 4) 12 m

Answer 1

Answer:

14m

Explanation:

apparent height = height /refractive index

21/2 = h /4/3

H= 14 m