Question

The stress-strain graph for two materials $A$ and $B$ are shown in figure. The graph are drawn to the same scale. Select the correct statement

• A. Material $A$ has greater Young's Modulus
• B. Material $A$ is ductile
• C. Material $B$ is brittle
• D. $Allofthese$

Answer 1

The correct option is D $Allofthese$

As the diagram shows,

$y=\frac{\text{Stress}}{\text{Strain}}=$ slope

The slope of materrial 'A' is larger than than the slope of material $B^4$, so Young modulus of $A$ is greater.

Now, ductitity is measured by the plastic region

In the graph , materual A has a greater plastic region, hence it is more ductile than $B$.

Britte is just inversely proportional to the plastic region, so material $B$ is more do britte

Hence, all the options are correct.