O-LevelPhysicsThermal Physics5054/12 · May/June 2025 · Q141 Mark

A fixed mass of air has a volume of 150 cm³ and a pressure of 120 kPa. The volume of the air is now changed to 100 cm³. The temperature of the air remains constant. What is the new pressure of the air?

A80 kPa

B180 kPa

C80 000 kPa

D180 000 kPa

✓ Correct answer

B: 180 kPa

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Topic: Thermal Physics, O-Level Physics (syllabus 5054). Multiple choice, 1 mark.
Source: O-Level Physics, May/June 2025 Paper 1 Variant 2, question 14.

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