[" 18.The radius of curvature of the cony "],[[" cm and the refractive index of its materia "],[" is "1.6" .The power of the lens is "]]

The radius of curvature of convex surface of a piano convex is.15 cm and refractive index of the lens is 1.6. The power of the lens is—

The radius of curvature of the convex surface of a thin plano-convex lens is 15 cm and the refractive index of its material is 1.6. The power of the lens is

The power of a biconvex lens is 10 dioptre and the radius of curvature of each surface is 10 cm. Then the refractive index of the material of the lens is

The power of a biconvex lens is 10 dioptre and the radius of curvature of each surface is 10 cm. Then the refractive index of the material of the lens is,

The power of a biconvex lens is 10 dioptre and the radius of curvature of each surface is 10 cm. Then the refractive index of the material of the lens is

The radius of curvature of a thin planoconvex lens is 10 cm and the refractive index of its glass is 1.5. If the plane surface is silvered, then it will behave like a