A-LevelPhysicsForces, density and pressureOct/Nov 2022Paper 1 Q161 Mark
The diagram shows two vessels, P and Q, both with sides inclined at 45° to the horizontal. [Figure showing vessel P tapering outwards and vessel Q tapering inwards] Vessel P tapers outwards and vessel Q tapers inwards, as shown. Both vessels contain a liquid. The depth of the liquid in the vessels is the same. The liquid in vessel P is twice as dense as the liquid in vessel Q. What is the ratio pressure due to the liquid on the base of P / pressure due to the liquid on the base of Q ?
A2/1
B√2/1
C1/√2
D1/2
✓ Correct Answer
The correct answer is A: 2/1
📋 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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