A-LevelPhysicsWavesOct/Nov 2023Paper 1 Q221 Mark
A source of sound waves is moving at a constant speed directly towards a stationary observer. The sound waves have a speed of 340 m s⁻¹ and a frequency of 480 Hz. The observer hears sound waves of frequency 650 Hz. What is the speed of the source?
A89 m s⁻¹
B120 m s⁻¹
C250 m s⁻¹
D340 m s⁻¹
✓ 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...
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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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