RAJASTHAN ­ PET Rajasthan PET Solved Paper-2003

  • question_answer
    The excess of pressure inside a soap bubble than that of the outer pressure is

    A)  \[\frac{4T}{r}\]

    B)  \[\frac{2T}{r}\]  

    C)  \[\frac{8T}{r}\]

    D)  None of these

    Correct Answer: A

    Solution :

     Excess pressure inside the soap \[p=\frac{4T}{r}\] where r = radius of bubble T = surface tension


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