Two persons do the same amount of work. The first person does it in 10s and the second , in 20s. Find the ratio of the power used by the person to that by the second person.
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let the work done be 'x'
then ratio of power = work done by first person/time taken by him : work done by second person/time taken by him
=> x/10 : x/20
= 2:1 answer
then ratio of power = work done by first person/time taken by him : work done by second person/time taken by him
=> x/10 : x/20
= 2:1 answer
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