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11th Class Physics Thermodynamical Processes Question Bank Thermodynamics Conceptual Problems

  • question_answer
    \[\mathbf{400 J}\] of work is done on a gas to reduce its volume by compression adiabatically. What is the change in internal energy of the gas?

    Answer:

                    For an adiabatic process, \[\Delta Q=0\] As work is done on the gas, so \[\text{ }\!\!\Delta\!\!\text{ W = - 400 J}\] Change in internal energy, \[\Delta U=\Delta Q-\Delta W=0-(-400)\] \[\mathbf{=+400J}\]


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