Class 11 NEET Physics Properties of Matter Questions

Question : 28 of 90

Marks: +1, -0

Two wires are made of the same material and have the same volume. The first wire has cross– sectional area A and the second wire has cross – sectional area 3A. If the length of the first wire is increased by ∆l on applying a force F, how much force is needed to stretch the second wire by the same amount ?