Which of the following is the correct option for free expansion of an ideal gas under adiabatic condition 

  1. A

    q=0,ΔT0.W=0

  2. B

    q=0,ΔT0,W0

  3. C

    q=0,ΔT=0,W=0

  4. D

    q=0,ΔT=0,W0

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    Solution:

    For the free expansion of an ideal gas, the opposing force is zero, hence work done = 0. 

    ΔU=q+w,w=0 and ΔU=q

    But the process is adiabatic, hence q = 0 

    q=0,ΔT=0, w=0

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