What curvature must be given to the bounding concave surface of refracting medium `
Channel: Doubtnut
Date: 2020-08-02

What curvature must be given to the bounding concave surface of refracting medium `(mu = 3//2)` for a virtual image at `40 cm` of an object in this medium at a distance of `60 cm`. The adjoining medium is air `(mu = 1)`.