RAJASTHAN PMT Rajasthan - PMT Solved Paper-1997

  • question_answer
    On charging a soap bubble its radius:

    A)  increases

    B)  decreases

    C)  remains same

    D)  first increases then decreases

    Correct Answer: A

    Solution :

    On charging a soap boubble its capacity increases. \[\because \]     \[q\propto C\]                 \[C=4\pi \,{{\varepsilon }_{0}}r\] So, if capacity increases, radius of bubble increases.


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