Question

Power of the lens is +3 D. what is the focal length and nature of the lens?

Answer 1

Answer:

Answer. Answer:Complete step by step answer: For a convex lens, the focal length is positive and for a concave lens, the focal length is negative. Since, the focal length is +50cm, the combination lens is of convex nature

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Answer 2

Answer:

power = 1 / focal length

+3D = 1

focal length = 1/3 m

lens is a concave lens which makes virtual and erect image

Explanation:

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