The refractive index of the material of a double convex lens is 1.5 and its focal length is 5cm. If the radii of curvature are equal, the value of the radius of curvature is

The refractive index of the material of a double convex lens is 1.5 an

1.	The refractive index of the material of a double convex lens is 1.5 and its focal length is 5cm. If the radii of curvature are equal, the value of the radius of curvature is
Answer» `5.0` `6.5` `8.0` `9.5` ANSWER :A