A-LevelPhysicsWavesOct/Nov 2013Paper 1 Q41 Mark
A signal that repeats periodically is displayed on the screen of a cathode-ray oscilloscope. [Figure 4.1] The screen has 1 cm squares and the time base is set at 2.00 ms cm⁻¹. What is the frequency of this periodic signal?
A50 Hz
B100 Hz
C125 Hz
D200 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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