Chhattisgarh PMT Chhattisgarh PMT Solved Paper-2010

  • question_answer
    The excess of pressure due to surface tension in a spherical liquid drop of radius R is proportional To

    A)  \[R\]                                    

    B) \[{{R}^{3}}\]

    C)  \[{{R}^{-2}}\]                                   

    D)  \[{{R}^{-1}}\]

    Correct Answer: D

    Solution :

    The excess pressure of a spherical liquid drop \[\Delta p=\frac{2T}{R}\]                 \[\therefore \]  \[\Delta p\propto \frac{1}{R}\]


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