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RAJASTHAN PMT Rajasthan - PMT Solved Paper-2003

  • question_answer
    Water rises in a vertical capillary tube upto a length of 10 cm. If the tube is inclined at \[45{}^\circ \], the length of water column risen in the tube will be

    A)  \[10\,cm\]                         

    B)  \[10\,\sqrt{2}\,cm\]

    C)  \[5\,\sqrt{2}\,cm\]        

    D)         \[20\,cm\]

    Correct Answer: B

    Solution :

    When capillary tube is tilted through an angle \[\text{,}\] then length of water risen in capillary, \[l=\frac{h}{\cos \,}\] Here         \[=45{}^\circ \] \[\therefore \]  \[l=\frac{10}{\cos \,45{{{}^\circ }^{-}}}10\sqrt{2}cm\]


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