O-LevelPhysicsForces5054/12 · May/June 2018 · Q171 Mark

The diagram shows a simple mercury barometer. Which height is a measure of the atmospheric pressure?

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.

ALength A, from the mercury level in the tube to the top of the tube.

BLength B, from the mercury level in the reservoir to the very top of the sealed tube.

CLength C, from the mercury level in the reservoir to the mercury level in the tube.

DLength D, an arbitrary total length encompassing the tube and reservoir.

✓ Correct answer

C: Length C, from the mercury level in the reservoir to the mercury level in the tube.

Oracle Prep sorts past-paper questions by topic, so you can drill Forces and see which topics are most likely to come up next.

Questions and mark schemes are from past examination papers and remain the copyright of the exam board. How Oracle Prep builds its content