Question
In plotting stress versus strain curves for two materials $P$ and $Q$, a student by mistake puts strain on the $y$-axis and stress on the $x$-axis as shown in the figure. Then the correct statement$(s)$ is(are)

$(A)$ $P$ has more tensile strength than $Q$

$(B)$ $P$ is more ductile than $Q$

$(C)$ $P$ is more brittle than $Q$

$(D)$ The Young's modulus of $P$ is more than that of $Q$

Answer

$Y=\frac{\text { stress }}{\text { strain }}$

$\Rightarrow \frac{1}{Y}=\frac{\text { strain }}{\text { stress }} \Rightarrow \frac{1}{Y_P}>\frac{1}{Y_\theta} \Rightarrow Y_P$

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