A) \[\gamma \propto {{r}^{2}}\]
B) \[\gamma \propto {{l}^{3}}\]
C) \[\gamma \propto l/{{r}^{2}}\]
D) \[\gamma \propto {{l}^{2}}\]
Correct Answer: C
Solution :
[c] \[\gamma =\frac{F}{\pi {{r}^{2}}}\times \frac{\ell }{\Delta \ell }\Rightarrow \gamma \propto \frac{1}{{{r}^{2}}}\]
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