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A-LevelPhysicsQuantum physicsOct/Nov 2019Paper 4 Q1112 Marks

(a) With reference to the photoelectric effect, state what is meant by work function energy. (b) The work function energy of a clean metal surface is 5.5 × 10⁻¹⁹ J. Electromagnetic radiation of wavelength 280 nm is incident on the metal surface. The metal is in a vacuum.

Q: What topic does this question test?

This question tests Quantum physics in A-Level Physics (syllabus code 9702). It is worth 12 marks.

📋 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 structured question tests Quantum physics in A-Level Physics (syllabus code 9702). It is worth 12 marks.

Source

This question appeared in the Cambridge A-Level Physics Oct/Nov 2019 examination, Paper 4 Variant 3.

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