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MHT CET 2024 Physics question

PhysicsRay Optics and Optical InstrumentsMHT CET 2024

An optician makes spectacles having a combination of a convex lens of focal length 40 cm in contact with a concave lens of focal length 25 cm. The power of this combination of lenses in dioptre is

Answer: (B)

Solution

For lenses in contact, powers add: with . Convex lens: . Concave lens: . Hence , option (B); the combination is diverging (concave) since the

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Question ID VK-099612