A-LevelPhysicsWavesOct/Nov 2023Paper 1 Q241 Mark
A plane polarised light wave of intensity I₀ is incident normally on a polarising filter. The initial intensity of the transmitted wave is 0. A second polarising filter is then inserted between the source and the first filter. Its transmission axis is at 45° to the transmission axis of the first filter, as shown. [Figure 24.1] What is the intensity of the transmitted wave from the filter combination?
A0
BI₀/8
CI₀/4
DI₀/2
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The correct answer is C. This question tests the candidate's understanding of waves 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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