Question

Figure shows the stress-strain graphs for materials .`A` and `B`. From the graph it follows that

A. Material (ii) is more elasitc than material (i) and hence material (ii) is more brittle
B. Materials (i) and (ii) have the same elasticity and the same brittleness.
C. Material (ii) is elastic over a larger region of strain as compared to (i).
D. Material (ii) is more brittle than material (i)

Answer 1

Correct Answer - C::D
From graph (i) linear limit vanishes soon and for small stress there is large strain as compared to graph (ii),
Hence, material (iI) is more elasitic over a large region of strian as compared to (i). So the ultimate tensile stregth for material (ii) is greater than (i)
A material is said to be more briitle if its fracture point is more closer to ulimate strength point.
Hence material (ii) is more-brittle than material (i)