JEE Main & Advanced Physics Thermodynamical Processes Question Bank Topic Test - Thermodynamical Processes

  • question_answer
    Choose the correct statement for an isolated system.

    A) \[\Delta U(C\to D)=\] negative                        

    B) \[\Delta Q(A\to B)=\] positive

    C) \[\Delta U=(A-B-C-D-A)\ne 0\]                   

    D) \[\Delta Q(D\to A)=0\]

    Correct Answer: D

    Solution :

    [d] Idea In an isolated system no heat is exchanged between system and surrounding during process.             Here as system is isolated \[\Delta Q=0,\] for any part of system in graph.           TEST Edge Question from p-V curve are very important from examination point of view, conceptual clearity is necessary to tackle. These problems, a problem which seem difficult may involve a basic concept with which it can be solved easily. Work done in p-V curve, change in internal energy etc., are common questions which are asked in examination.

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