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NEET Sample Paper NEET Sample Test Paper-17

  • question_answer
    The surface tension of a soap solution is\[2\times {{10}^{-2}}N/m.\]it To blow a bubble of radius 1 cm, the work done is

    A) \[4\pi \times {{10}^{-6}}J\]             

    B) \[8\pi \times {{10}^{-6}}J\]             

    C) \[12\pi \times {{10}^{-6}}J\]                       

    D) \[16\pi \times {{10}^{-6}}J\]    

    Correct Answer: D

    Solution :

    \[W=4\pi {{R}^{2}}\times 2T=16\pi \times {{10}^{-6}}\,J\] Hence, the correction option is [d].


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