A) 480 N
B) 240 N
C) 140 N
D) None of these
Correct Answer: B
Solution :
Area, \[A=2.5\,\,m{{m}^{2}}\,=\,2.5\times {{10}^{-\,6}}\,{{m}^{2}}\] \[\Delta T=40{}^\circ C\] Now, force exerted on it is \[F=\alpha AY\left( \Delta T \right)\] \[=\,\,(1.2\times 1{{0}^{-\,5}})\times (2.5\times {{10}^{-\,6}})\times (2\times 1{{0}^{11}})\times 40\] \[=\,\,\,240\,N\]You need to login to perform this action.
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