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NEET AIPMT SOLVED PAPER MAINS 2010

  • question_answer
    Three moles of an ideal gas expanded spontaneously into vacuum. The work done will be

    A)  infinite                

    B)  3 J                         

    C)  9 J                         

    D)  zero

    Correct Answer: D

    Solution :

    \[W={{p}_{ext}}.\Delta V\]                                   For vacuum,       \[{{p}_{ext}}=0\] \[\therefore \]                  \[W=0\cdot \Delta V=0\]


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