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A convex lens A of focal length 20 cm and a concave lens B of focal length 5 cm are kept along the same axis with a distance 'd' between them. If a parallel beam of light falling on 'A' leaves 'B' as a parallel beam, then the distance 'd' in cm will be
(1) 25
(2) 15(3) 50
(4) 30

Question. A convex lens A of focal length 20 cm and a concave lens B of focal length 5 cm are kept along the same axis with a distance ‘d’ between them. If a parallel beam of light falling on ‘A’ leaves ‘B’ as a parallel beam, then the distance ‘d’ in cm will be

(1) 25

(2) 15

(3) 50

(4) 30

                                                                                                                        (NEET-2021)

Aditya Bhatt Answered question 14 February 2024
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