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JAMIA MILLIA ISLAMIA Jamia Millia Islamia Solved Paper-2004

  • question_answer
    If masses of all molecules of a gas are halved and their speeds are doubled, then the ratio of initial and final pressures is:

    A)  1:2                                        

    B)  2 : 1

    C)  4 : 1                                      

    D)  1 : 4

    Correct Answer: A

    Solution :

    Using the relation \[{{E}_{1}}\]                  ... (1) and also               \[{{E}_{2}}\]                       ?(2) Dividing equation (2) by (1), we get \[p\{({{E}_{1}}\cup {{E}_{2}})\cap (\overline{{{E}_{1}}}\cap \overline{{{E}_{2}}})\}\] So,          \[\le \frac{1}{4}\] The ratio of initial and final pressures is 1 : 2.


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