J & K CET Engineering J and K - CET Engineering Solved Paper-2008

  • question_answer
    The excess pressure in a bubble of radius R of a gas in a liquid of surface tension S is

    A)  \[\frac{2\,S}{R}\]

    B)  \[\frac{2\,R}{S}\]

    C)  \[\frac{2\,S}{{{R}^{2}}}\]

    D)  \[\frac{2{{R}^{2}}}{S}\]

    Correct Answer: A

    Solution :

    Excess pressure inside a bubble of radius R \[=\frac{2S}{R}\] where S is the surface tension of the liquid.


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