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JEE Main & Advanced Physics Fluid Mechanics, Surface Tension & Viscosity / द्रव यांत्रिकी, भूतल तनाव और चिपचिपापन Question Bank Mock Test - Mechanical Properties of Fluids

  • question_answer
    Water rises to a height h in a capillary tube of cross- sectional area A. The height to which water will rise in a capillary tube of cross-sectional area 4A will be

    A) \[h\]                

    B) \[h/2\]

    C) \[h/4\]              

    D) \[h4\]

    Correct Answer: B

    Solution :

    [b] \[h=\frac{2S\cos \theta }{rpg}\] Cross-sectional area increases four times, which means radius get doubles. So \[h'=\frac{2S}{2(rpg)}=\frac{h}{2}\]


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