A) \[\frac{F}{A\alpha \Delta T}\]
B) \[\frac{F}{2A\alpha \Delta T}\]
C) \[\frac{2\,F}{A\alpha \Delta T}\]
D) \[\frac{\,F}{A\alpha (\Delta T-273)}\]
Correct Answer: A
Solution :
| [a] \[\frac{F}{A}\,\,=\,\,Y\,\,\frac{\Delta \,L}{L}\] |
| \[\frac{F}{A}\,\,=\,\,Y\,\alpha \,\Delta \,T\] |
| \[Y\,=\,\frac{F}{A\,\alpha \,\Delta \,T}\] |
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