Physics - Geometrical Optics Question with Solution | TestHub

An object A is at a distance of a = 36 cm from a lens with a focal length of $\mathrm{f}=30\mathrm{cm}$. A flat mirror turned through $45^{\circ }$ with respect to the optic axis of the lens is placed behind at a distance of $\ell =1\mathrm{m}$. At what distance h (in cm) from the optic axis should the bottom of a tray filled with water up to depth $\mathrm{d}=20\mathrm{cm}$ be placed to obtain a sharp image of the object at the bottom?