A-LevelPhysicsWavesFeb/Mar 2020Paper 1 Q231 Mark
A sound wave is displayed on the screen of a cathode-ray oscilloscope, as shown. [Figure showing a CRO display of a sinusoidal wave] The time-base setting is 0.50 ms per division. What is the frequency of the sound wave?
A500 Hz
B670 Hz
C1000 Hz
D1300 Hz
✓ Correct Answer
The correct answer is B. 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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