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NEET Sample Paper NEET Sample Test Paper-86

  • question_answer
    An ideal gas heat engine operates in a Carnot cycle between \[227{}^\circ C\] and \[127{}^\circ C.\] It absorbs 6 kcal at the higher temperature. The amount of heat (in kcal) converted into work is equal to

    A) 12        

    B) 4.8   

    C) 3.5                   

    D)        1.6

    Correct Answer: A

    Solution :

    [a] Efficiency \[=\frac{{{T}_{1}}-{{T}_{2}}}{{{T}_{1}}}\] \[{{T}_{1}}=227+273=500\,K\] \[{{T}_{2}}=127+273=400\,K\] \[\eta =\frac{500-400}{500}=\frac{1}{5}\] Hence, \[V=(\eta )\times H=\frac{1}{5}\times 6=1.2\,\,k\,cal\]                  


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