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प्रश्न
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उत्तर
(i) work done depends on the displacement, now, vertical distance travelled by A and B is same, hence ratio of wok done by them is 1 : 1.
(ii) Power = `"work done"/"time taken"`
`"P"_"A"/"P"_"E" = 1/1 xx 15/20 = 3/4`
The required ratio is 3 : 4.
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