A-LevelPhysicsSuperpositionMay/June 2017Paper 1 Q281 Mark
A parallel beam of red light of wavelength 700 nm is incident normally on a diffraction grating that has 400 lines per millimetre. What is the total number of intensity maxima from the grating?
A6
B7
C8
D9
✓ Correct Answer
The correct answer is B. 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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