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JEE Main & Advanced Physics Thermodynamical Processes JEE PYQ-Thermodynamical Processes

  • question_answer
    n moles of an ideal gas with constant volume heat capcity \[{{C}_{V}}\]undergo an isobaric expansion by certain volume. The ratio of the work done in the process, to the heat supplied is:                         [JEE Main 10-4-2019 Morning]

    A) \[\frac{4nR}{{{C}_{V}}-nR}\]               

    B) \[\frac{nR}{{{C}_{V}}-nR}\]

    C) \[\frac{nR}{{{C}_{V}}+nR}\]   

    D)      \[\frac{4nR}{{{C}_{V}}+nR}\]

    Correct Answer: C

    Solution :

    [c] \[w=nR\Delta T\]
                \[\Delta H=({{C}_{\text{v}}}+nR)\Delta T\]
                \[\frac{\text{w}}{\Delta H}=\frac{nR}{{{C}_{\text{v}}}+nR}\]


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