Question 15 of 116

Coefficient of linear expansion of brass and steel rods are α1 and α2, Lengths of brass and steel rods l1 and l2 respectively. If l2-l1 is maintained same at all temperatures, Which one of the following relations holds good?

(a) α1l22=α2l12                (b) α12l2=α22l1

(c) α1l1=α2l2                (c) α1l2=α2l1