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What is the power of lens if object is placed in front of it at a distance of 20cm which has formed inverted image.
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Explanation:
For this question just I can say that power of this lens will be positive because convex lens will only form both real and inverted image so focal length of this lens will be positive then we know that p=1/f then if f will be positive then p also will be positive
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This may help you but sorry for late
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