A-LevelPhysicsWavesFeb/Mar 2024Paper 1 Q251 Mark
A sound wave is detected by a microphone and displayed on the screen of a cathode-ray oscilloscope (CRO). [Figure showing a waveform on a CRO screen, with 1 cm indicated for both vertical and horizontal axes] The frequency of the wave is 2.5 kHz. What is the setting on the time-base of the CRO?
A0.1 ms cm⁻¹
B0.4 ms cm⁻¹
C0.1 s cm⁻¹
D0.4 s cm⁻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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