A-LevelPhysicsSuperposition9702/12 · Feb/Mar 2022 · Q251 Mark
A corridor is 13.2 m long and has closed doors that reflect sound at both ends. The speed of sound in the air in the corridor is 330 ms⁻¹. [Figure 25.1] What is the lowest frequency of sound that could create a stationary wave in the corridor with a node halfway along it?
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.
A0.040 Hz
B13 Hz
C25 Hz
D50 Hz
✓ Correct answer
C: 25 Hz
Practise more questions on this topic
Oracle Prep sorts past-paper questions by topic, so you can drill Superposition and see which topics are most likely to come up next.
Sign up free →