BVP Medical BVP Medical Solved Paper-2003

  • question_answer
    Two gases of equal masses are in thermal equilibrium. If \[{{P}_{a}},{{P}_{b}}\]and\[{{V}_{a}},{{V}_{b}}\] are their respective pressures and volumes, then which relation is true?

    A) \[2{{P}_{a}}{{V}_{a}}={{P}_{b}}{{V}_{b}}\]                           

    B) \[{{P}_{a}}\ne {{P}_{b}},{{V}_{a}}={{V}_{b}}\]

    C) \[\frac{{{P}_{a}}}{{{V}_{a}}}=\frac{{{P}_{b}}}{{{V}_{b}}}\]                            

    D) \[{{P}_{a}}{{V}_{a}}={{P}_{b}}{{P}_{v}}\]

    Correct Answer: D

    Solution :

                    When the gases are in thermal equilibrium, it means the temperature of the gases are same, therefore according to Boyles law \[{{P}_{1}}{{V}_{1}}={{P}_{2}}{{V}_{2}}\] Here:     \[{{P}_{1}}={{P}_{a}}\] \[{{V}_{1}}={{V}_{a}}\] \[{{P}_{2}}=Pb\] \[{{V}_{2}}=Vb\] Hence, \[{{P}_{a}}{{V}_{a}}={{P}_{b}}{{V}_{b}}\]


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