A thin plano-convex lens acts like a concave mirror of focal length 0.2m when silvered from its plane surface.The refractive index of the material of the lens is 1.5 .The radius of curvature of the convex surface of the lens will be: 0.1m

Find the refractive index of the material of a plano-convex lens, if the radius of curvature of the convex surface is 20 cm and focal length of the lens is 60 cm?

A plano-convex lens P and a concavo-convex lens Q are in contact as shown in figure. The refractive index o fthe material of the lens P and Q is 1.8 and 1.2 respectively. The radius of curvature of the concave surface of the lens Q is double the radius of curvature of the convex surface. The convex surface of Q is silvered. An object is placed on the placed on the principal axis at a distance 10 cm form the plane surface. The image is formed at a distance 40 cm from the plane surfaces on the same side. The focal length of the system is

A plano-convex lens P and a concavo-convex lens Q are in contact as shown in figure. The refractive index o fthe material of the lens P and Q is 1.8 and 1.2 respectively. The radius of curvature of the concave surface of the lens Q is double the radius of curvature of the convex surface. The convex surface of Q is silvered. The radius of curvature of common surface is

What is the refractive index of material of a plano-convex lens, if the radius of curvature of the convex surface is 10 cm and focal length of the lens is 30 cm ?

What is the refractive index of material of a plano-convex lens , if the radius of curvature of the convex surface is 10 cm and focal length of the lens is 30 cm ?

The refractive index of a material of a plano concave lens is 5/3 . Its radius of curvature is 0.3 m. Focal length of the lens in air is

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

For a plano convex lens, the radius of curvature of convex surface is 10 cm and the focal length is 30 cm. The refractive index of the material of the lens is