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A-LevelPhysicsNuclear physicsOct/Nov 2017Paper 2 Q74 Marks

(a) A nucleus X decays by emitting a β⁺ particle to form a new nucleus, ²³₁₁Na. State the number of nucleons and the number of neutrons in nucleus X. (b) State one similarity and one difference between a β⁺ particle and a β⁻ particle.

Q: What topic does this question test?

This question tests Nuclear physics in A-Level Physics (syllabus code 9702). It is worth 4 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 Nuclear physics in A-Level Physics (syllabus code 9702). It is worth 4 marks.

Source

This question appeared in the Cambridge A-Level Physics Oct/Nov 2017 examination, Paper 2 Variant 3.

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