A-LevelPhysicsWavesFeb/Mar 2016Paper 1 Q211 Mark
A distant star is receding from the Earth with a speed of 1.40 × 10⁷ m s⁻¹. It emits light of frequency 4.57 × 10¹⁴ Hz. The speed of light is 3.00 × 10⁸ m s⁻¹. The Doppler effect formula can be used with light waves. What will be the frequency of this light when detected on Earth?
A2.04 × 10¹³ Hz
B4.37 × 10¹⁴ Hz
C4.57 × 10¹⁴ Hz
D4.79 × 10¹⁴ Hz
✓ 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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