JEE Main & Advanced Physics Thermometry, Calorimetry & Thermal Expansion Question Bank Thermometry

  • question_answer
    Absolute zero (0 K) is that temperature at which [AFMC 1993]

    A)            Matter ceases to exist

    B)            Ice melts and water freezes

    C)            Volume and pressure of a gas becomes zero

    D)            None of these

    Correct Answer: C

    Solution :

                       We know that \[P={{P}_{0}}(1+\gamma t)\] and \[V={{V}_{0}}(1+\gamma t)\] and \[\gamma =(1/273)/{}^\circ C\]for \[t=-273{}^\circ C\], we have \[P=0\] and \[V=0\]                    Hence, at absolute zero, the volume and pressure of the gas become zero.


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