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A convex lens of focal length 40 cm is in contact with a concave lens of focal length 25 cm. The power of combination is A. -1.5D B. -6.5D C. 1.5 D D. 6.5

A convex lens of focal length 40 cm is in contact with a concave lens of focal length 25 cm. The power of combination is A. -1.5D B. -6.5D C. 1.5 D D. 6.5

Grade:upto college level

1 Answers

Saurabh Koranglekar
askIITians Faculty 10335 Points
3 years ago
Dear student

The answer is option a

Regards

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