Refractive index of water is `5//3`. A light source is placed in water at a depth of 4m. Then what must be the minimum radius of disc placed on water surface so that the light of source can be stopped?

The refractive index of water is 4//3. The speed of light in water is

The refractive index of water is 4//3. The speed of light in water is

The refractive index of water is 4/3 . Find the speed of light in water.

The water in a pond has a refractive index (5)/(3) . A source of light is placed 4 m below the surface of water. Calculate the minimum radius of an opaque disc needed to be floated on water so that light does not come out.

The refractive index of water is 1.33. What will be the speed of light in water

The refractive index of water is 1.33. What will be the speed of light in water

The refractive index of water is 1.33. What will be the speed of light in water?

The refractive index of water is 1.33.What will be the speed of light in water?

A point source of light is kept at a depth of 'h' in water of r.i 4/3. The radius of the circle at the surface of water through which light emits is