A-LevelPhysicsSuperpositionFeb/Mar 2022Paper 1 Q281 Mark
Light of a single wavelength is incident normally on a diffraction grating. The resulting diffraction pattern is displayed on a screen. Which change makes the first orders of intensity maxima further apart from each other on the screen?
Aplacing the screen closer to the diffraction grating
Busing a diffraction grating with less separation between adjacent slits
Cusing a diffraction grating with more slits but keeping the same separation between adjacent slits
Dusing light with a shorter wavelength
✓ 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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