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CMC Medical CMC-Medical VELLORE Solved Paper-2013

  • question_answer
    A water film is made between two 10 cm long straight wire and at a distance of 0.5 cm. If distance between the wire is increased by 1 mm. Then work done will be

    A)  \[9.22\times {{10}^{-6}}J\]                         

    B)  \[1.44\times {{10}^{-5}}J\]

    C)  \[2.88\times {{10}^{-5}}J\]                         

    D)  \[5.76\times {{10}^{-5}}J\]

    Correct Answer: B

    Solution :

                    Works done \[W=2\Delta \,AT\] \[=2\times \frac{10}{100}\times \frac{1}{1000}\times 22\times {{10}^{-2}}\] \[=1.44\times {{10}^{-5}}J\]


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