A-LevelPhysicsWavesMay/June 2022Paper 1 Q241 Mark
A source emits a sound wave of a single frequency. The Doppler effect causes a different frequency of sound to be heard by a stationary observer. What is a requirement for the Doppler effect to occur?
Asource that is moving as it produces the sound wave
Bsource that produces a polarised sound wave
Csource that produces a sound wave of changing amplitude
Dsource that produces a sound wave of changing frequency
✓ Correct Answer
The correct answer is A. 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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