Ray Optics

The following figure shows a beam of light converging at point \(P\). When a concave lens of focal length \(16 \mathrm{~cm}\) is introduced in the path of the beam at a place shown by dotted line such that \(O P\) becomes the axis of the lens, the beam converges at a distance \(x\) from the lens. The value of \(x\) will be equal to