JEE Main & Advanced Physics Work, Energy, Power & Collision / कार्य, ऊर्जा और शक्ति Question Bank Power

  • question_answer
    The average power required to lift a 100 kg mass through a height of 50 metres in approximately 50 seconds would be             [SCRA 1994; MH CET 2000]

    A)             50 J/s  

    B)             5000 J/s

    C)             100 J/s

    D)               980 J/s

    Correct Answer: D

    Solution :

                \[P=\frac{mgh}{t}\]=\[\frac{100\times 9.8\times 50}{50}=980J/s\]


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