The following four wires are made of same material. Which one will have the largest elongation when subjected to the same tension ?
Medium
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$F=\frac{Y_{\mathrm{A}} \Delta L}{\mathrm{L}}$
or $\Delta \mathrm{L}=\frac{\mathrm{FL}}{\mathrm{AY}}\left\{\mathrm{A}=\pi \mathrm{r}^{2}\right\}$
$\Rightarrow$ More $L/A,$ more elongation
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