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

  • question_answer
    If the surface tension of water is 0.06 Nm-1, then the capillary rise in a tube of diameter 1 mm is (\[\theta \]=0° ) [AFMC 1998]

    A) 1.22 cm          

    B)             2.44 cm

    C)             3.12 cm

    D)                      3.86 cm

    Correct Answer: B

    Solution :

                    \[h=\frac{2T}{rdg}=\frac{2\times 6\times {{10}^{-2}}}{5\times {{10}^{-4}}\times {{10}^{3}}\times 10}\]\[=2.4\times {{10}^{-2}}m=2.4cm\]


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