Physics - Geometrical Optics Question with Solution | TestHub

A convex lens A of focal length $20\mathrm{cm}$ and a concave lens B of focal length $56\mathrm{cm}$ are kept along the same axis with the distance $d$ between them. If a parallel beam of light falling on A leaves B as a parallel beam, then the magnitude of distance $d$ (in $\mathrm{cm}$ ) is