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Radii of curvature of a converging lens are in the ratio 1:2. Its focal length |
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Answer» fi/f2=1/2 Explanation: R1/R2=1/2 R1=x CM,f1=R1/2=x/2 cm R2=2x cm,f2=R2/2=2x/2 so f1/f2=1/2 |
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