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  3. BHU PMT

BHU PMT BHU PMT Solved Paper-2004

  • question_answer
    The amount of work, which can be obtained by supplying 200 cal of heat, is:                        [BHU PMT-2004]

    A)  840 J                                    

    B)  840 erg

    C)  840 W                                  

    D)  840 dyne

    Correct Answer: A

    Solution :

                     Key Idea: Work done is equal to heat supplied. Work=Heat supplied We know that 1 cal=4.2 J, therefore                                                 \[W=200\,cal\]                                                 \[W=200\times 4.2\]                                                 \[W=840\,\,J\]


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