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    Question

    If the diameter of a capillary is doubled, then the rise

    of water in it will be –
    A two times Correct Answer Incorrect Answer
    B half Correct Answer Incorrect Answer
    C four times Correct Answer Incorrect Answer
    D no change Correct Answer Incorrect Answer

    Solution

    Radius of a capillary tube is inversely proportional to the height of the liquid column. So, if radius of the tube is doubled, rise of level of water will becomes half of the previous rise in capillary tube. Capillary action, or capillarity, is the ability of a liquid to flow in narrow spaces without the assistance of, and in opposition to external forces like gravity.

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