JEE Main & Advanced Physics Thermodynamical Processes Question Bank Isobaric and Isochoric Processes

  • question_answer
    If 300 ml of a gas at \[{{27}^{o}}C\] is cooled to \[{{7}^{o}}C\] at constant pressure, then its final volume will be [Pb. PET 1999; BHU 2003; CPMT 2004]

    A)            540 ml                                     

    B)            350 ml

    C)            280 ml                                     

    D)            135 ml

    Correct Answer: C

    Solution :

                       \[V\propto T\] at constant pressure            Þ \[\frac{{{V}_{1}}}{{{V}_{2}}}=\frac{{{T}_{1}}}{{{T}_{2}}}\] Þ \[{{V}_{2}}=\frac{{{V}_{1}}{{T}_{2}}}{{{T}_{1}}}=\frac{300\times 280}{300}=280\,ml.\]


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