Physics (AS & A Level) · Oct / Nov 2022 · Paper 12 · Question 21

A wire is extended by different forces. The wire obeys Hooke's law. A graph is plotted to show the variation of a quantity y with a quantity x. [graph of y against x, a curve starting at origin and rising with decreasing gradient] What could x and y represent?

1. Aelastic potential energy / extension
2. Bextension / force
3. Cforce / extension
4. Dextension / elastic potential energy

As printed in the paper