A fish looking up through the water sees the outside world contained in a circular horizon. If the refractive index of water is `(4)/(3)` and the fish is 12 cm below the surface, the radius of this circle is cm is

A fish looking up through the water sees the outside world contained in a circular horizon. If the refractive index of water is 4//3 and the fish is 12cm below the surface, the radius of this circle in cm is

A diver looking up through the water sees the outside world contained in a circular horizon. The refractive index of water is (4)/(3) , and the diver's eyes are 15 cm below the surface of 3 water. Then the radius of the circle is:

A fist looking from within water sees the outside world through a circular horizon. If the fish sqrt(7) cm below the surface of water, what will be the radius of the circular horizon

The force required to take away a flat circular plate of radius 4 cm from the surface of water is

In a pond of water, a flame is held 2 m above the surface of the water. A fish is at depth of 4 m from the water surface. Refractive index of water is (4)/(3) . The apparent height of the flame from the eyes of fish is -

A fish lies at the bottom of a 4 m deep water lake. A bird flies 6m above the water surface and refractive index of water is 4//3 . Then the distance between