A-LevelPhysicsSuperpositionFeb/Mar 2025Paper 1 Q271 Mark
Light waves are emitted from two sources. What is a necessary condition for observable interference fringes to be produced?
AThe waves must be polarised.
BThe waves must not be polarised.
CThe waves must be coherent.
DThe waves must have equal amplitudes.
✓ Correct Answer
The correct answer is C. This question tests the candidate's understanding of superposition 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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