O-LevelPhysicsMeasurementOct/Nov 2025Paper 1 Q71 Mark
A quantity of water is poured into a measuring cylinder. A small piece of rock is then added carefully. The diagrams show the water levels and the measuring cylinder scales. [Figure 7.1] What are the correct values for the volumes of water and rock?
Avolume of water/cm³: 32.5, volume of rock/cm³: 22.0
Bvolume of water/cm³: 32.5, volume of rock/cm³: 54.5
Cvolume of water/cm³: 35.0, volume of rock/cm³: 24.0
Dvolume of water/cm³: 35.0, volume of rock/cm³: 59.0
✓ Correct Answer
The correct answer is C: volume of water/cm³: 35.0, volume of rock/cm³: 24.0
📋 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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