A-LevelPhysicsWavesFeb/Mar 2019Paper 1 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?
A783 Hz
B788 Hz
C908 Hz
D913 Hz
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The correct answer is D. This question tests the candidate's understanding of waves within the Physicssyllabus. The examiner's mark scheme requires...
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Common mistake: 62% of candidates selected the distractor because they confused... The examiner specifically designed this question to test whether students can differentiate between... To secure full marks, candidates must demonstrate...
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