A) \[\frac{Y}{\alpha t}\]
B) \[Y\alpha t\]
C) \[\frac{1}{(Y\alpha t)}\]
D) \[\frac{\alpha t}{Y}\]
Correct Answer: B
Solution :
\[\frac{\Delta \ell }{\ell }=\alpha .\Delta T\]and\[Y=\frac{F/A}{\Delta \ell /\ell }\] So, \[F=AY\alpha t\] Thermal stress \[\left( \frac{F}{A} \right)=Y\alpha t.\]You need to login to perform this action.
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