Question

Which of the following statements is correct for brittle materials.

(a) It breaks soon after elastic limit is crossed

(b) It shows significant plastic deformation before breaking

(c) It is used to make wires

(d) Stress is never proportional to strain

Answer 1

Right answer is (a) It breaks soon after elastic limit is crossed

Easiest explanation: Brittle materials break soon after elastic limit. They show no significant plastic deformation and hence can’t be used for making wires. Their stress-strain curve looks like: