A) \[0.5\,%\]
B) \[1\,%\]
C) \[2\,%\]
D) \[4\,%\]
Correct Answer: D
Solution :
\[\frac{\Delta A}{A}\,\times \,100\,\,=\,\,\beta \Delta T\,\times \,100\] \[=\,\,\,2\,\alpha \,\Delta \,T\,\,\times \,\,100\] \[=\,\,2\left( \frac{\Delta \ell }{\ell }\times 100 \right)\,\,=\,\,4\,%\]You need to login to perform this action.
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