Physics (AS & A Level) · Oct / Nov 2019 · Paper 11 · Question 16

A fixed amount of a gas undergoes a series of changes to its pressure and volume. In two of the changes, no work is done by or on the gas. In one change work is done by the gas on its surroundings. In another change work is done on the gas by its surroundings. [graph of pressure against volume] During the change when work is done on the gas by its surroundings, how much work is done on the gas?

1. A15 J
2. B25 J
3. C30 J
4. D45 J

As printed in the paper