Physics (AS & A Level) · May / June 2025 · Paper 13 · Question 22

A wire of length L0 is attached at one end to a fixed point. A tensile force is applied to the other end so that the wire extends and has a new length L1. What is the strain of the wire?

1. A\(\left(\dfrac{L_1}{L_0}\right) - 1\)
2. B\(L_1 - L_0\)
3. C\(\left(\dfrac{L_1}{L_0}\right) + 1\)
4. D\(L_1 + L_0\)

As printed in the paper