A-LevelPhysicsSuperpositionOct/Nov 2016Paper 1 Q271 Mark
Observable interference fringes are produced using light from a double slit. The intensity of the light emerging from each slit is initially the same. The intensity of the light emerging from one of the slits is now reduced. How does this affect the interference pattern?
AThe bright fringes and the dark fringes all become brighter.
BThe bright fringes and the dark fringes all become darker.
CThe bright fringes become brighter and the dark fringes become darker.
DThe bright fringes become darker and the dark fringes become brighter.
✓ Correct Answer
The correct answer is D. 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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