A-LevelPhysicsForces, density and pressureMay/June 2012Paper 1 Q231 Mark
A pipe is closed at one end and contains gas, trapped by a column of water. [Figure 23.1] The atmospheric pressure is 1.0 × 10⁵ Pa. The density of water is 1000 kg m⁻³. What is the pressure of the gas? (Use g = 10 ms⁻².)
A0.3 × 10⁵ Pa
B0.5 × 10⁵ Pa
C1.5 × 10⁵ Pa
D1.7 × 10⁵ Pa
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The correct answer is C. This question tests the candidate's understanding of forces, density and pressure within the Physicssyllabus. The examiner's mark scheme requires...
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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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