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JEE Main & Advanced JEE Main Paper (Held on 7 May 2012)

  • question_answer
    This question has Statement 1 and Statement 2. Of the four choices given after the Statements, choose the one that best describes the two Statements. Statement 1: In an adiabatic process, change in internal energy of a gas is equal to work done on/by the gas in the process. Statement 2: The temperature of a gas remains constant in an adiabatic process.   JEE Main Online Paper (Held On 07 May 2012)

    A) Statement 1 is true. Statement 2 is true, Statement 2 is a correct explanation of Statement 1.

    B)                        Statement 1 is true. Statement 2 is false.

    C)                        Statement 1 is false, Statement 2 is true.

    D)                        Statement 1 is false. Statement 2 is true, Statement 2 is not a correct explanation of Statement 1.

    Correct Answer: B

    Solution :

                    In an adiabatic process,\[\delta H=0\]And according to first law of thermodynamics \[\delta H=\delta U+W\] \[\therefore \]\[W=-\delta U\]


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