A-LevelPhysicsForces, density and pressureOct/Nov 2010Paper 1 Q131 Mark
The diagrams show a metal cube suspended from a spring balance before and during immersion in water. [Figure showing a spring balance suspending a metal cube. One diagram shows it before immersion, the other during partial immersion in water.] A reduction in the balance reading occurs as a consequence of the immersion. Which statement is correct?
AThe balance reading will be further reduced if the cube is lowered further into the water.
BThe balance reading during immersion corresponds to the upthrust of the water on the cube.
CThe forces acting on the vertical sides of the cube contribute to the change in the balance reading.
DThe gravitational pull on the cube is unchanged by the immersion.
✓ Correct Answer
The correct answer is D. This question tests the candidate's understanding of forces, density and pressure within the Physicssyllabus. The examiner's mark scheme requires...
📋 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...
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