Question

A Copper wire and steel of the same diameter and length are connected end to end and a force is applied, which stretches their combined length by 1 cm. The two wires will have
A. same stress and same strain
B. same stress and different strains
C. different stresses and same strain
D. different stresses and different strains

Answer 1

Correct Answer - B
Tension is any of the wire is same at all points as cross sectional area are the same and tension also. So stress `(=F//A)` in both the wires would be the same but from Strain `= "Stress"/"Strain"` as `Y` is different for both, so train is different in both.