Physics, asked by Rangbaaz33, 5 months ago

The radius of curvature of concave lens is 20cm. Give its focal length.

Answers

Answered by Guru181

Answer:

So, focal length = 21× radius of curvature = 21×20 cm = 10 cm

Answered by ugaming397

Answer:

sorry

Explanation:

sorry I don't have any idea of the question

sorry

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