Manipal Engineering Manipal Engineering Solved Paper-2012

  • question_answer
    A balloon contains\[500\,\,{{m}^{3}}\]of Heat\[{{27}^{o}}C\]and 1 atmospheric pressure. The volume of Heat\[-{{3}^{o}}C\]and\[0.5\]atmospheric pressure will be

    A) \[700\,\,{{m}^{3}}\]                       

    B) \[900\,\,{{m}^{3}}\]

    C) \[1000\,\,{{m}^{3}}\]     

    D)        \[500\,\,{{m}^{3}}\]

    Correct Answer: B

    Solution :

    Using standard gas equation,                 \[\frac{{{p}_{1}}{{V}_{1}}}{{{T}_{1}}}=\frac{{{p}_{2}}{{V}_{2}}}{{{T}_{2}}}\]     or     \[{{V}_{2}}=\frac{{{p}_{1}}{{V}_{1}}{{T}_{2}}}{{{p}_{2}}{{T}_{1}}}\]            \[\therefore \]      \[{{V}_{2}}=\frac{1\times 500\times (273-3)}{0.5\times 300}\]                      \[{{V}_{2}}=\frac{1\times 500\times 270}{0.5\times 300}\]                      \[{{V}_{2}}=900\,\,{{m}^{3}}\]


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