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

  • question_answer
    If the surface tension of a liquid is T, the gain in surface energy for an increase in liquid surface by A is [MP PET 1991; RPMT 2002]

    A)             \[A{{T}^{-1}}\]       

    B)             \[AT\]

    C)             \[{{A}^{2}}T\]        

    D)             \[{{A}^{2}}{{T}^{2}}\]

    Correct Answer: B

    Solution :

                    Surface energy = surface tension × increment in area = \[T\times A\]


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