A-LevelPhysicsWavesMay/June 2018Paper 1 Q221 Mark
Two lasers emit light in a vacuum. One laser emits red light and the other emits green light. Which property of the two laser beams must be different?
Aamplitude
Bfrequency
Cintensity
Dspeed
✓ Correct Answer
The correct answer is B. This question tests the candidate's understanding of waves 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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