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JAMIA MILLIA ISLAMIA Jamia Millia Islamia Solved Paper-2004

  • question_answer
        Two narrow capillary tubes A and B are of lengths ( and 111 and of same radius r. The rate of flow of water through the tube A under a constant pressure head P is 3\[\sqrt{\text{49}0}\text{ m}/\text{s}\]. If A and B are connected in series and the same pressure difference P is maintained between the ends of the composite tube, then the rate of flow of water is :

    A)  \[\sqrt{\text{4}\text{.9}}\text{ m}/\text{s}\]                    

    B) \[8\sqrt{3}\]

    C)  \[2\sqrt{3}cm\]                               

    D)  none of these

    Correct Answer: C

    Solution :

                    For tube \[1:\sqrt{3}\] \[7.9\times {{10}^{4}}K\] For the composite tube \[3.5\times {{10}^{4}}K\] \[5.8\times {{10}^{4}}K\]


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