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BCECE Engineering BCECE Engineering Solved Paper-2013

  • question_answer
    When capillary tubes of different radii  r dipped in water, water rises to different heights K in them, then

    A) \[h{{r}^{2}}=\text{constant}\]

    B)         \[hr=\text{constant}\]

    C)         \[\frac{h}{r}=\text{constant}\]

    D)         \[\frac{h}{{{r}^{2}}}=\text{constant}\]

    Correct Answer: B

    Solution :

    We have, \[h=\frac{2\sigma \cos \theta }{r\rho g}\] \[\Rightarrow \]\[h.r=constant\]


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