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JEE Main & Advanced Physics Work, Energy, Power & Collision / कार्य, ऊर्जा और शक्ति Question Bank Self Evaluation Test - Work, Energy and Power

  • question_answer
    How much water, a pump of 2 kW can raise in one minute to a height of 10 m, take\[\operatorname{g} = 10 m/{{s}^{2}}\]?

    A) 1000

    B) 1200

    C) 100

    D) 2000

    Correct Answer: B

    Solution :

    [b] \[P=\frac{W}{t}.Here,P=2kW=2000W.\] \[W=Mgh=M\times 10\times 10=100M\] And \[at=60\text{ }s.\] This gives, \[M=1200\text{ }kg\] Its volume \[=1200\] litre as 1 litre of water contains 1 kg of its mass.


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