JEE Main & Advanced Sample Paper JEE Main Sample Paper-45

  • question_answer
    If the length of tube is less and cannot accommodate the maximum rise of liquid, then

    A)  liquid will form foundation

    B)  liquid will not rise

    C)  the meniscus will adjust itself so that the water does not spill

    D)  None of the above

    Correct Answer: C

    Solution :

     If the length of the tube h' is less than h, it is found that the liquid does not overflow. In a tube of insufficient length, the liquid rises upto the top of the tube and increases the radius of curvature, of its meniscus to a value R', so that smaller the length (h') of the tube, greater will be the radius of curvature (R?) of the meniscus, and the liquid will never overflow.

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