QJEEM22Ph1b7c: JEE Main 2022 Physics - Class 12 JEEM22Ph1b7c Solution: In an experiment with a convex lens, The plot of the image…

In an experiment with a convex lens, The plot of the image distance $\left(v^{\prime}\right)$ against the object distance ( $\left.\mu^{\prime}\right)$ measured from the focus gives a curve $v^{\prime} \mu^{\prime}=225$ . If all the distances are measured in $\mathrm{cm}$ . The magnitude of the focal length of the lens is ___________ cm.