KEAM 2023 Physics and Chemistry Solved Paper

Two thin convex lenses L1 and L2 have focal lengths 4‌cm and 10‌cm, respectively. They are separated by a distance of x‌cm as shown in the figure. A point source S is placed on the principal axis at a distance 12‌cm to the left of L1. If the image of S is formed at infinity, the value of x is :