If a point source is placed at a depth `h` in a liquid of refractive index `4/3` . Find percentage of energy of light that escapes from liquid. (assuming `100%` transmission of emerging light)

A point source of light is placed at a depth h=0.5 m below the surface of a liquid (mu=5/4) , Then , the fraction of light energy that escape directly from the liquid surface is

A point source of light is placed at a depth h=0.5 m below the surface of a liquid (mu=5/4) , Then , the fraction of light energy that escape directly from the liquid surface is

A luminous point source is placed at a depth of 30 cm in a source containing a liquid of refractive index 1.25. From the source light rays are being emitted in all directions. The rays which are refracted from the upper surface of the liquid form a circle. Calculate the radius of the circle.

A disc is placed on the surface of pond filled with liquid of refractive index (5)/(3) . A source of light is placed 4m below the surface of liquid. Calculate the minimum area of the disc so that light does not come out of liquid.

A disc is placed on the surface of pond filled with liquid of refractive index (5)/(3) . A source of light is placed 4m below the surface of liquid. Calculate the minimum area of the disc so that light does not come out of liquid.

A point source of light is placed at a distance h below the surface of a large deep late.What is the percentage of light energy that escapes directly form the water surface is mu of the water= 4//3 ?(neglet partial reflection)

A point source of light is placed at a distance h below the surface of a large deep lake.What is the percentage of light energy that escapes directly form the water surface if mu of the water= 4//3 ?(neglet partial reflection)

A point source of light is placed 4m below the surface of a liquid of refractive index 5//3 . The minimum diameter of a disc, which should be placed over the source, on the surface of the liquid to cut off all light out of water, is