The radius of curvature of the curved su...

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

acts as convex lens only for the objects that lie on its side

acts as convex lens for the objects that lie on its curved side

acts as convex lens lens irrespective of the side on which the object lies

acts as convex lens lens irrespective of side on which the object lies

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