Multiple Choice Questions on Two persons do the same amount of work one in 10 s and the other in 20 s Find the ratio of the power........... for General Studies (Level 1) Preparation

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Multiple Choice Questions

Two persons do the same amount of work one in 10 s and the other in 20 s Find the ratio of the power...........

General Science (Easy) Physics
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    Two persons do the same amount of work, one in 10 s and the other in 20 s. Find the ratio of the power used by the first person to that by the second person.

    6 : 4

    Incorrect Answer

    2 : 1

    Correct Answer

    5 : 2

    Incorrect Answer

    4 : 3

    Incorrect Answer
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    Explanation:

    2 : 1

    -

    The ratio should be 

    Let the work be x

    Therefore 

    For 1st person p=x/10

        2nd person p=x/20

    The ratio is (x/10)(x/20)

    =2:1

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