11th Class Physics Thermodynamical Processes Question Bank Thermodynamics Conceptual Problems

  • question_answer
    Explain why the internal energy of a compressed gas is less than that of a rarefied gas at the same temperature.

    Answer:

                    When a real gas is compressed, its molecules come closer. Their mutual interactions become stronger. This increases the magnitude of potential energy. But potential energy is negative. Hence the total energy of the compressed gas decreases. However, the kinetic energy is same for both the compressed and rarefied gases as both are at the same temperatures.


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