1.

A force of \[6\times {{10}^{6}}\text{ }N{{m}^{-2}}\]is required for breaking a material. Then density p of the material is\[3\times {{10}^{3}}kg\,{{m}^{-3}}\]. If the wire is to break under its own weight, the length of the wire made of that material should be (\[take\,g=10\,m{{s}^{-2}}\])

A. 20m
B. 200m
C. 100m
D. 2000m
Answer» C. 100m


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