A convex lens is in contact with a concave lens. The magnitude of the ratio of their focal length is 5/3 . If their equivalent focal length is 45 cm. the individual focal lengths of concave and convex lens are respectively.

Correct Answer is : -30 cm, 18 cm

TS EAMCET Medical 28 Sept 2020 Shift 1 Paper

Question : 103 of 160

Marks: +1, -0

A convex lens is in contact with a concave lens. The magnitude of the ratio of their focal length is

. If their equivalent focal length is 45 cm. the individual focal lengths of concave and convex lens are respectively.

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