A-LevelPhysicsSuperpositionOct/Nov 2024Paper 1 Q301 Mark
The diagram shows visible light incident normally on a diffraction grating. [Figure 30.1] A pattern of intensity maxima forms on the screen. A line connecting the centre of the fourth order intensity maximum with the centre of the diffraction grating forms an angle of 53° with the centre line. The grating has a line spacing of 2.7 × 10⁻⁶ m. What is the wavelength of the incident light?
A4.1 x 10⁻⁷ m
B5.4 × 10⁻⁷ m
C1.6 × 10⁻⁶ m
D2.2 × 10⁻⁶ m
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The correct answer is B. This question tests the candidate's understanding of superposition within the Physicssyllabus. The examiner's mark scheme requires...
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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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