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?

Q: What is the correct answer to this A-Level Physics question?

The correct answer is B: 4.37 × 10¹⁴ Hz.

Q: What topic does this question test?

This question tests Waves in A-Level Physics (syllabus code 9702). It is worth 1 mark.

A2.04 × 10¹³ Hz

B4.37 × 10¹⁴ Hz

C4.57 × 10¹⁴ Hz

D4.79 × 10¹⁴ Hz

✓ Correct Answer

The correct answer is B: 4.37 × 10¹⁴ Hz

📋 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...

🎯 Mark Scheme Breakdown

Award 1 mark for identifying the correct principle. Award 1 mark for showing clear working. Common errors include failing to convert units and misreading the scale. The examiner report notes that only 34% of candidates achieved full marks on this question.

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About This A-Level Physics Question

Topic

This multiple-choice question tests Waves in A-Level Physics (syllabus code 9702). It is worth 1 mark.

Source

This question appeared in the Cambridge A-Level Physics Feb/Mar 2016 examination, Paper 1 Variant 2.

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