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Sahay Sir > Question Answers > Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions) > A converging lens and a converging mirror are placed with their principal axis coinciding. Their separation equals 40 cm. A point source S is placed on the principal axis at a distance of 12 cm from the lens

A converging lens and a converging mirror are placed with their principal axis coinciding. Their separation equals 40 cm. A point source S is placed on the principal axis at a distance of 12 cm from the lens

Find the optical power and focal lengths of a bi-convex lens of radius of curvature R1 = 20 cm R2 = 30 cm. Assume that the refractive index of the lens is mu = 3/2 and the refractive index of the media at both sides are