Question

The stress-strain graphs for two materials are shown in figure. (Assume same scale).

Answer 1

Step 1: Draw the stress-strain curve.


Step 2: Analyse the stress-strain curve and explain the concept.

As per the given figures


The linear limit of material (ii) is more than that of material (i), hence material (ii) is more elastic than material (i). But this is not the reason for the brittleness of material (ii).

Since the material (i) can sustain more strain before fracture as compared to material (ii), therefore material (ii) is more brittle as compared to material (i).

Final Answer: (c), (d)