A plastic hemisphere has a radius of curvature of 8cm and an index of refraction of 1.6. On the ...

A plastic hemisphere has a radius of curvature of 8 cm and an index of refraction of 1.6 . On the axis halfway between the plane surface and the spherical one ( 4 cm from each ) is a small object O . The distance between the two images when viewed along the axis from the two sides of the hemisphere is approximately .

A plastic hemisphere has a radius of curvature of 8 cm and an index of refraction of 1.6. ON the axis halfway between the plane surface and the spherical one (4 cm from each) is a small object O. The distance between the two images when viewed along the axis from the two sides of the hemisphere is approximately

A thin plano-convex lens acts like a concave mirror of radius of curvature 20 cm when its plane surface is silvered. The radius of curvature of the curved surface if index of refraction of its matarial is 1.5 will be

A plano convex lens of radius of curvature 30 cm and refractive index 1.5 is kept in air. Find its focal length (in cm).

A double convex lens has faces of radii of curvature 30 cm each. The refractive index of the material of the lens is 1.5. What is the focal length of this lens when immersed is carbondisulphide of refractive index 1.6 ?

Power of biconvex lens is 10 diopters and radius of curvature of each surface is 10cm.Then refractive index of material of lens is

The power in dioptre of an equi-convex lens with radii of curvature of 10cm and refractive index 1.6 is