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  3. RAJASTHAN ­ PET

RAJASTHAN ­ PET Rajasthan PET Solved Paper-2012

  • question_answer
    The excess of pressure inside a drop of soap solution is pj and that inside a soap bubble of same radius is\[{{p}_{b}}\]. The correct relation between \[{{p}_{d}}\]and\[{{p}_{b,}}\]is given by

    A)  \[2{{p}_{d}}={{p}_{b}}\]

    B)  \[{{p}_{d}}={{p}_{b}}\]

    C)  \[{{p}_{d}}=2{{p}_{b}}\]      

    D)  None of these

    Correct Answer: A

    Solution :

     A bubble has two surfaces where as a drop has only one. Therefore,      \[2{{p}_{d}}={{p}_{b}}\]


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