A-LevelPhysicsWavesFeb/Mar 2020Paper 1 Q241 Mark
An observer is situated at the top of a tall tower. An aeroplane emitting sound at a frequency of 1000 Hz approaches the observer at a speed of 165 ms¯¹. The speed of sound is 330 ms¯¹. What is the frequency of the sound received by the observer?
A330 Hz
B667 Hz
C1000 Hz
D2000 Hz
✓ Correct Answer
The correct answer is D. This question tests the candidate's understanding of waves within the Physicssyllabus. The examiner's mark scheme requires...
📋 Examiner Report & Trap Analysis
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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