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JEE Main & Advanced Sample Paper JEE Main Sample Paper-28

  • question_answer
    A force F is required to break a copper wire of radius R. The necessary force required to break the copper wire of radius 2R will be :

    A)  \[F/2\]                                

    B)  \[2F\]

    C)  \[4F\]                                  

    D)  \[F/4\]

    Correct Answer: C

    Solution :

    Breaking stress is property of material. \[\frac{F}{\pi {{R}^{2}}}=\frac{F'}{\pi {{(2R)}^{2}}}\]


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