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An object when placed at 10 cm from convex lens & when placed at 20 cm from it, image produced has same height. Find focal length of lens?

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asked May 1, 2021 in Physics by Doubtly (98.9k points)
reopened Jun 29, 2023 by Doubtly

An object when placed at 10 cm from convex lens & when placed at 20 cm from it, image produced has same height. Find focal length of lens?

physics25feb2021

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1 Answer

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answered May 1, 2021 by Doubtly (98.9k points)
selected Jun 29, 2023 by Doubtly

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The correct answer is 15 cm

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