[" The radius of curvature of a plano-convex lens is "20cm." Refractive index "],[" of glass is "1.5." Find the focal length of the lens."]

The radius of curvature of a plano-convex lens is R. The refractive index of material of prism is n then find the focal length of the lens ?

The radius of curvture of the convex face of a plano-covex lens is 12 cm and its refractive index is 1.5. Find the focal length of the lens. .

The radius of curvature for a convex lens is 40 cm , for each surface. Its refractive index is 1.5. The focal length will be

A plano-convex lens has refractive index 1.6 and radius of curvature 60 cm. What is the focal length of the lens?

A plano-convex lens has refractive index 1.6 and radius of curvature 60 cm. What is the focal length of the lens?

The radius of curvature of the curved surface of a plano-convex lens is 20 cm. If the refractive index of the material of the lens be 1.5, it will

The radius of curvature of the curved surface of a plano-convex lens is 20 cm . If the refractive index of the material of the lens be 1.5 , it will

The radius of curvature of the curved surface of a plano-convex lens is 20 cm . If the refractive index of the material of the lens be 1.5 , it will