O-LevelPhysicsThermal Physics5054/12 · Oct/Nov 2017 · Q111 Mark

A gas syringe contains a fixed mass of air. The volume of the air is 240 cm³ and it exerts a pressure of 5.0 × 10⁴ Pa. The air is slowly compressed, keeping the temperature constant, until the pressure is 1.5 × 10⁵ Pa. What is the final volume of air?

A72 cm³

B80 cm³

C720 cm³

D800 cm³

✓ Correct answer

B: 80 cm³

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Topic: Thermal Physics, O-Level Physics (syllabus 5054). Multiple choice, 1 mark.
Source: O-Level Physics, Oct/Nov 2017 Paper 1 Variant 2, question 11.

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