JEE Main & Advanced Physics Fluid Mechanics, Surface Tension & Viscosity / द्रव यांत्रिकी, भूतल तनाव और चिपचिपापन Question Bank Capillarity

  • question_answer
    A capillary tube made of glass is dipped into mercury. Then  [MP PET 1996]

    A) Mercury rises in the capillary tube

    B)             Mercury rises and flows out of the capillary tube

    C)             Mercury descends in the capillary tube

    D)             Mercury neither rises nor descends in the capillary tube

    Correct Answer: C

    Solution :

                    The angle of contact of mercury with glass is obtuse. So it gets depressed below the liquid level outside.


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