The strain-stress plot for materials A, B, C | vedclass

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(A) Young's modulus $(Y)$ is defined as the ratio of stress to strain: $Y = \frac{	ext{Stress}}{	ext{Strain}}$.In the given graph, strain is plotted

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$C$

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(A) Young's modulus $(Y)$ is defined as the ratio of stress to strain: $Y = \frac{	ext{Stress}}{	ext{Strain}}$.In the given graph, strain is plotted on the $y$-axis and stress is plotted on the $x$-axis.Therefore, the slope of the graph is $	ext{Slope} = \frac{	ext{Strain}}{	ext{Stress}} = \frac{1}{Y}$.To have the largest Young's modulus $(Y)$, the value of $\frac{1}{Y}$ must be the smallest.This means the slope of the strain-stress graph should be the minimum.Looking at the figure, material $C$ has the smallest slope.Thus, material $C$ has the largest Young's modulus.

The strain-stress plot for materials $A$, $B$, $C$ and $D$ is shown in the figure. Which material has the largest Young's modulus?

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