A-LevelPhysicsSuperpositionOct/Nov 2009Paper 1 Q251 Mark
A parallel beam of light of wavelength 450 nm falls normally on a diffraction grating which has 300 lines/mm. What is the total number of transmitted maxima?
A7
B8
C14
D15
✓ 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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