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A-LevelPhysicsWaves9702/12 · Oct/Nov 2024 · Q231 Mark

A horizontal beam of vertically polarised light of amplitude A is incident normally on a polarising filter. The transmission axis of the filter is at an angle of 50° to the vertical. What is the amplitude of the light in the beam after it has passed through the filter?

A0.17A

B0.41A

C0.64A

D0.80A

✓ Correct answer

C: 0.64A

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About this question

Topic: Waves, A-Level Physics (syllabus 9702). Multiple choice, 1 mark.
Source: A-Level Physics, Oct/Nov 2024 Paper 1 Variant 2, question 23.

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