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JEE Main & Advanced Physics Elasticity Question Bank Youngs Modulus and Breaking Stress

  • question_answer
    A force F is needed to break a copper wire having radius R. The force needed to break a copper wire of radius 2R will be [MP PET 1990]

    A) F/2         

    B)                 2F

    C)                 4F          

    D)                 F/4

    Correct Answer: C

    Solution :

        Breaking Force µ Area of cross section of wire (pr2) If radius of wire is double then breaking force will become four times.


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