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 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.

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 cylindrical jar of radius 10 cm is filled with water upto a height of 15cm. 14 sphercal balls of radius 3 cm each are immersed in the jar. Find the new level to which water is filled in the jar.

A cylindrical jar of radius 10 cm is filled with water upto a height of 15cm. 14 sphercal balls of radius 3 cm each are immersed in the jar. Find the new level to which water is filled in the jar.

A point source of monochromatic light .S. is kept at the centre Cof the bottom of a cylinder, Radius of circular base of the cylinder is 15.0 cm. The cylinder contains water (refractive index =(4)/(3) ) to a height of 7.0 cm (see figure) Find the area of water surface through which light emerges in 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.

A small illuminated bulb is at the bottom of a tank, containing a liquid of refractive index mu upto a height H. Find the expression for the diameter of an opaque disc, floating symmetrically on the liquid surface in order to cut- off the light from the bulb.