Physics (AS & A Level) · Oct / Nov 2022 · Paper 13 · Question 19

A copper wire of length 3.6 m and diameter 1.22 mm is stretched by a force of 37 N. The wire obeys Hooke's law. The Young modulus of copper is 1.17 × 10¹¹ Pa. Which extension is caused by this force?

1. A0.24 mm
2. B0.76 mm
3. C0.97 mm
4. D3.1 mm

As printed in the paper