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NEET Sample Paper NEET Sample Test Paper-68

  • question_answer
    A system is given 300 calories of heat and it 0 does 600 joules of work. How much does the internal energy of the system change in this process \[\left( J\,\,=\,\,4.18\,joules/cal \right)\]

    A) 654 Joule                      

    B) 156.5 Joule

    C) -300 Joule                     

    D) -528.2 Joule

    Correct Answer: A

    Solution :

    \[\operatorname{J}\Delta Q\,\,=\,\,\Delta U+\Delta W,\,\,\Delta U=J\Delta Q-\Delta W\] \[\Delta U = 4.18 \times  300 - 600 = 654 Joule\]


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