A-LevelPhysicsForces, density and pressureOct/Nov 2023Paper 1 Q141 Mark

Two solid cylindrical objects X and Y are held fully submerged in a liquid, as shown. [Figure 14.1] The objects have the same volume. The density of the material of Y is twice the density of the material of X. Both objects are stationary. Which statement is correct?

Q: What topic does this question test?

This question tests Forces, density and pressure in A-Level Physics (syllabus code 9702). It is worth 1 mark.

AThe force due to the liquid acting on the top surface of X is greater than that acting on the top surface of Y.

BThe pressure difference due to the liquid between the top and bottom surfaces of X is the same as that for Y.

CThe upthrust acting on X is the same as the upthrust acting on Y.

DThe weight of X is the same as the weight of Y.

✓ Correct Answer

The correct answer is C: The upthrust acting on X is the same as the upthrust acting on Y.

📋 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 multiple-choice question tests Forces, density and pressure in A-Level Physics (syllabus code 9702). It is worth 1 mark.

Source

This question appeared in the Cambridge A-Level Physics Oct/Nov 2023 examination, Paper 1 Variant 2.

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