The diagram shows a mercury manometer. The tube is open to the atmosphere on the right-hand side. The left-hand side is connected to a container containing a gas at pressure P. Atmospheric pressure on its own supports a column of mercury of height 756 mm. Which height of column does pressure P on its own support?

This question uses a diagram from the original paper, which isn't shown here. Open the full paper from the past papers archive to see it.
✓ Correct answer
B: 696 mm of mercury
Practise more questions on this topic
Oracle Prep sorts past-paper questions by topic, so you can drill Forces and see which topics are most likely to come up next.
Sign up free →