JEE Main 12 Apr 2019 Paper 1 Solved Paper

A concave mirror has radius of curvature of 40 cm. It is at the bottom of a glass that has water filled up to 5 cm (see figure). It a small particle is floating on the surface of water, its image as seen, from directly above the glass, is at a distance d from the surface of water. The value of d is close to. (Refractive index of water = 1.33)