AMU Medical AMU Solved Paper-2002

  • question_answer
     A quantity of air (y = 1.4) at \[27{}^\circ C\] is compressed suddenly, the temperature of the air system will

    A)  fall                                        

    B)  rise

    C)  remain unchanged        

    D)  first rise and then fall

    Correct Answer: B

    Solution :

    From first law of thermodynamics \[\Delta U=Q-W\] where \[\Delta U\] is change in internal energy, W the work and Q the energy. When air is compressed, it means work is done on the system, so internal energy increases, it means temperature increases.


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