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Sahay Sir > Question Answers > Cengage NEET by C.P Singh > Part 2 > Chapter 18 - Refraction at Spherical Surfaces > A convex lens is in contact with concave lens. The magnitude of the ratio of their focal length is 3/2. Their equivalent focal length is 30 cm. What are their individual focal lengths in cm

A convex lens is in contact with concave lens. The magnitude of the ratio of their focal length is 3/2. Their equivalent focal length is 30 cm. What are their individual focal lengths in cm

A convex lens is in contact with concave lens. The magnitude of the ratio of their focal length is 3/2. Their equivalent focal length is 30 cm. What are their individual focal lengths in cm