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

  • question_answer
    A certain mass of gas is taken from an initial thermodynamic state A to another state B by process I and II. In process I the gas does 5 joules of work and absorbs 4 joules of heat energy. In process II, the gas absorbs 5 joules of heat. The work done by the gas in process II (see figure) is

    A) +6 joules

    B) - 6 joules

    C) +4 joules

    D) - 4 joules

    Correct Answer: A

    Solution :

    [a]\[\Delta H=\Delta U+\Delta W\]
                            \[\Delta {{U}_{1}}=\Delta {{U}_{2}}\]
                            \[{{(\Delta H-\Delta W)}_{1}}=(\Delta H-\Delta W)\]
                            \[4-5=5-\Delta W\]

You need to login to perform this action.
You will be redirected in 3 sec spinner