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

  • question_answer
    When two capillary tubes of different diameters are dipped vertically, the rise of the liquid is  [NCERT 1978]

    A) Same in both the tubes           

    B)             More in the tube of larger diameter

    C)             Less in the tube of smaller diameter

    D)             More in the tube of smaller diameter

    Correct Answer: D

    Solution :

                    \[h=\frac{2T\cos \theta }{rdg}\therefore h\propto \frac{1}{r}\] (T,q, d and g are constant) If r is less then h will be more.


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