A-LevelPhysicsWaves9702/12 · Feb/Mar 2019 · Q251 Mark
A buzzer emitting sound of frequency 846 Hz is attached to a string and rotated in a horizontal circle. The linear speed of the buzzer is 25.0 m s⁻¹. [Figure 25.1] The speed of sound is 340 m s⁻¹. What is the maximum frequency heard by the observer?
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.
A783 Hz
B788 Hz
C908 Hz
D913 Hz
✓ Correct answer
D: 913 Hz
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