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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
    A \[U\]-tube containing a liquid is accelerated horizontally with a constant acceleration a. If the separation between the two vertical limbs is \[l\], then the difference in the heights of the liquid in the two arms is

    A) Zero                 

    B) \[l\]

    C) \[\frac{la}{g}\]             

    D) \[\frac{la}{a}\]

    Correct Answer: C

    Solution :

    [c] We know; \[\tan \theta =\frac{a}{g}\] In the present problem, \[\tan \theta =\frac{h}{l}\] So \[\frac{h}{l}=\frac{a}{g}\] or \[h=\frac{al}{g}\] (Where h is the difference in the heights in the two limbs)


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