JEE Main & Advanced Physics Thermodynamical Processes Sample Paper Topic Test - Thermodynamical Processes

  • question_answer
    A system changes from the state \[({{P}_{1}},\,\,\,{{V}_{1}})\] to \[({{P}_{2}},\,\,\,{{V}_{2}})\] as shown in the figure below. What is the work done by the system?                      

    A) \[7.5\times {{10}^{5}}\] joule

    B) \[7.5\times {{10}^{5}}\] ergs

    C) \[12\times {{10}^{5}}\] joule

    D) \[6\times {{10}^{5}}\] joule

    Correct Answer: C

    Solution :

    [c] Work done = Area of graph ABD; From above we get, Area \[=1/2\times 4(1\times {{10}^{5}}+5\times {{10}^{5}})\]\[=2\times 6\times {{10}^{5}}=12\times {{10}^{5}}\text{J}\].

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