O-LevelPhysicsForcesOct/Nov 2025Paper 1 Q81 Mark
The table shows how the extension of a spring varies with load. load/N: 0, 2, 4, 6, 8, 10, 12, 14, 16 extension/cm: 0, 3, 6, 9, 12, 15, 20, 27, 38 Between which two loads is the limit of proportionality?
A0 N and 2 N
B8 N and 10 N
C10 N and 12 N
D14 N and 16 N
✓ Correct Answer
The correct answer is C: 10 N and 12 N
📋 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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