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

  • question_answer
    The surface energy of liquid film on a ring of area \[0.15\ {{m}^{2}}\] is (Surface tension of liquid \[=5N{{m}^{-1}})\]   [EAMCET (Engg.) 2000]

    A) 0.75 J 

    B)             1.5 J

    C)             2.25 J 

    D)             3.0 J

    Correct Answer: B

    Solution :

                    Surface energy = \[T\times A=5\times 2\times (0.15)=1.5J\]


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