NEET Sample Paper NEET Sample Test Paper-20

  • question_answer
    An ideal gas undergoes cyclic process ABC as shown in the temperature-volume graph. For the process, the ratio \[{{P}_{B}}/{{P}_{A}}\]equals (\[{{P}_{B}},{{P}_{A}}\]being pressure at B and A, respectively)

    A)  1                                

    B) \[\frac{1}{2}\]            

    C)       \[\frac{1}{4}\]                       

    D)       2

    Correct Answer: D

    Solution :

    CA is an isobaric process and \[{{V}_{C}}=2{{V}_{A}}\] \[\Rightarrow \]\[{{T}_{C}}=2{{T}_{A}}.{{T}_{B}}={{T}_{C}}=2{{T}_{A}}\] AB is an isochoric process with \[{{T}_{B}}=2{{T}_{A}}.\] \[\therefore \]\[{{P}_{B}}=2{{P}_{A}}\]or \[{{P}_{B}}/{{P}_{A}}=2\] Hence, the correction option is (d).


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