JEE Main & Advanced Physics Kinetic Theory of Gases Sample Paper Topic Test - Kinetic Theory of Gases

  • question_answer
             
    DIRECTION: Read the passage given below and answer the questions that follows:
    A diathermic piston divides adiabatic cylinder volume \[{{V}_{0}}\] into two equal parts as shown in the figure. Both parts contains ideal monoatomic gases. The initial pressure and temperature of gas in left compartment are \[{{P}_{0}}\] and v while that in right compartment are \[2{{P}_{0}}\] and \[2{{T}_{0}}\]. Initially the piston is kept fixed and the system is allowed acquire a state of thermal equilibrium. 
    The pressure in left compartment after thermal equilibrium is achieved is

    A) \[{{P}_{0}}\]

    B) \[\frac{3}{2}{{P}_{0}}\]

    C) \[\frac{4}{3}{{P}_{0}}\]

    D) None of these 

    Correct Answer: B

    Solution :

    [b] \[{{n}_{1}}{{C}_{v}}\left( T-{{T}_{0}} \right)+{{n}_{2}}{{C}_{v}}\left( T-2{{T}_{0}} \right)=0\]
                       \[T=\frac{3}{2}{{T}_{0}}\]
                        \[{{P}_{f}}=\frac{{{P}_{i}}{{T}_{f}}}{{{T}_{i}}}=\frac{3}{2}{{p}_{0}}\]


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