A-LevelPhysicsSuperposition9702/12 · May/June 2023 · Q261 Mark
The sound from a loudspeaker placed above a tube causes resonance of the air in the tube. A stationary wave is formed with two nodes and two antinodes, as shown. [Figure 26.1] The tube has height 60 cm. The speed of sound in the air is 340 m s⁻¹. What is the frequency of the sound?
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.
A430 Hz
B570 Hz
C850 Hz
D1700 Hz
✓ Correct answer
A: 430 Hz
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