A-LevelPhysicsWavesOct/Nov 2022Paper 1 Q241 Mark
A miniature loudspeaker, initially at rest, falls vertically from a window in a high building. When the speaker has fallen a distance of 10.0m, it emits a very short pulse of sound of constant frequency 256 Hz in all directions. The pulse of sound, travelling at a speed of 330 ms¯¹, is heard by a person leaning out of the window. Air resistance is negligible. What is the frequency of the pulse of sound heard by the person?
A246 Hz
B249 Hz
C267 Hz
D313 Hz
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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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