A-LevelPhysicsWavesMay/June 2015Paper 1 Q241 Mark
Two light waves of the same frequency are represented by the diagram. [Figure showing two sinusoidal displacement-phase angle graphs. Both start at 0 displacement; the solid line increases initially, while the dashed line decreases initially. The solid line peaks at 90°, the dashed line peaks around 280° and has a minimum around 100°.] What could be the phase difference between the two waves?
A150°
B220°
C260°
D330°
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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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