Question

A tank of water when viewed normally appears to be 1 metre deep. Calculate its actual depth if refractive index of water is 4/3. By what distance the bottom of the tank appears to be raised?

Answer 1

As, we know that refractive index of is equal to,

R.I.(water) = Real depth of the tank/ Apparent depth of the tan

R.I = 4/3

4/3 = Real depth of the tank/1

Real depth of the tank = 4/3 m

Bottom of the tank appears to be raised by, = 4/3 -1 = 1/3 m