Physics (AS & A Level) · Feb / March 2017 · Paper 12 · Question 20

Two wires X and Y are made of different metals. The Young modulus of wire X is twice that of wire Y. The diameter of wire X is half that of wire Y. The wires are extended with the same strain and obey Hooke's law. What is the ratio tension in wire X / tension in wire Y?

1. A1/8
2. B1/2
3. C1
4. D8

As printed in the paper