A) 2000m
B) 2500m
C) 20m
D) 2m
Correct Answer: D
Solution :
Breaking stress is given by \[=6\times {{10}^{5}}N/{{m}^{2}}=\frac{mg}{A}\] (But \[m=AL\rho \]) \[6\times {{10}^{5}}=\frac{AL\rho g}{A}=L\rho g\] Thus, \[L=\frac{6\times {{10}^{5}}}{\rho g}\]\[=\frac{6\times {{10}^{5}}}{3\times {{10}^{4}}\times 10}=2m\]You need to login to perform this action.
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