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

  • question_answer
    A substance breaks down by a stress of 106 N/m2. If the density of the material of the wire is 3×103 kg/m3, then the length of the wire of the substance which will break under its own weight when suspended vertically, is            [DPMT 2004]

    A) 66.6 m

    B)                      60.0 m

    C)                      33.3 m

    D)             30.0 m

    Correct Answer: C

    Solution :

                    \[L=\frac{p}{dg}=\frac{{{10}^{6}}}{3\times {{10}^{3}}\times 10}=\frac{100}{3}=33.3m\]


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