Physics (AS & A Level) · Oct / Nov 2023 · Paper 13 · Question 18

A copper wire of diameter 1.6 mm is stretched within its limit of proportionality by a tensile force of 430 N. The Young modulus of copper is 130 GPa. What is the strain in the wire?

1. A4.1 × 10⁻⁴
2. B1.3 × 10⁻³
3. C1.6 × 10⁻³
4. D5.2 × 10⁻³

As printed in the paper