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JEE Main & Advanced Sample Paper JEE Main Sample Paper-3

  • question_answer
    A square wire frame of size L is dropped in a liquid. On taking out, a membrane is formed. If the surface tension of the liquid is T, force acting on the frame will be

    A)  2 T.L                     

    B)  4 T.L

    C)  8 T.L                     

    D)  10 T.L

    Correct Answer: C

    Solution :

     As there are two sides of the film created, the total boundary of the film would be 8L. Hence, force of surface tension will be 8L x T.


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