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NEET Sample Paper NEET Sample Test Paper-73

  • question_answer
    N moles of a monoatomic gas is carried round the reversible rectangular cycle ABCDA as shown in the diagram. The temperature at A is\[{{T}_{0}}\]. The thermodynamic efficiency of the cycle is

    A) \[15\,%\]                       

    B) \[50\,%\]

    C) \[20\,%\]                       

    D) \[20\,%\]

    Correct Answer: B

    Solution :

    Maximum efficiency of reversible process is given by \[\eta =1-\frac{T}{T'}\] At \[{{\operatorname{AP}}_{0}}{{V}_{0}}\,\,=\,\,nR{{T}_{0}}\] At \[\operatorname{B}2{{P}_{0}}{{V}_{0}}=nRT'\]  \[T'\,\,=\,\,2{{T}_{0}}\] \[\therefore \,\,\,\,\,\,\,\eta =1-\frac{{{T}_{0}}}{2{{T}_{0}}}=\frac{1}{2}=50\,%\]


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