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If two persons A and B take `2 s and 4 s`, respectively to lift an object to the same height h, then the ratio of their powers is
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Mar 19, 2022
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If two persons A and B take `2 s and 4 s`, respectively to lift an object to the same height h, then the ratio of their powers is ..............
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(a) 1:2 (b) 1:1 (c) 2 :1 (d) 1:3
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