Glycerine (refractive index 1.4) is poured into a large jar of radiys 0.2m to a depth of 0.1m. There is a small light source at the centre of the bottom of the jar. Find the area of the surface of glycerine through which the light passes.

A liquid of refractive index 1.5 is poured into a cylindrical jar of radius 20 cm upto a height of 20 cm.A small bulb is lighted at he centre of the bottom of the jar.Find the area of the liqud surface throug which the light of the bulb passes into air.

A liquid of refractive index 1.5 is poured into a cyclindrical jar of radius 20 cm upto a height of 20 cm. A small bulb at the centre of bottom glowing. Find area of the liquid surface through which the light of the bulb passes into air.

A liquid of refractive index 1.5 is poured into a cyclindrical jar of radius 20 cm upto a height of 20 cm. A small bulb at the centre of bottom glowing. Find area of the liquid surface through which the light of the bulb passes into air.

A point source of monochromatic light 'S' is kept at the centre of the bottom of a cylinder of radius 15.0 cm . The cylinder contains water (refractive index 4//3) to a height of 7.0 cm . Draw the ray diagram and calculate the area of water surface through which the light emerges in air.

A point source of monochromatic light 'S' is fept at the centre of the bottom of a cyclinder of radius 15.0 cm . The cyclinder contains water (refractive index 4//3 ) to a height of 7.0cm . Draw the ray diagramand caculate the area of water surface through which the light emerges in air.

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?

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?

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?