Physics · Oct / Nov 2018 · Paper 11 · Question 11
5054Pressure
A long tube, full of mercury, is inverted in a small dish of mercury. [diagram] The mercury level in the tube falls, leaving a vacuum at the top. When the atmospheric pressure decreases, which length decreases?
- APQ
- BPS
- CQR
- DRS
As printed in the paper
Show the answer
Correct answer: C. QR
Make a free account to save your answers and see your weak topics and ask the AI why a wrong answer is wrong.