O-LevelPhysicsEnergy & Work5054/12 · Oct/Nov 2015 · Q151 Mark

A piston of area 10 cm² is pushed slowly into a very large cylinder containing gas at a pressure of 10 N/cm². The pressure of the gas remains constant as the piston moves a distance of 0.10 m. What is the force of the gas on the piston and what is the work done by the piston on the gas?

Aforce/N 1.0, work done/J 0.1

Bforce/N 1.0, work done/J 10

Cforce/N 100, work done/J 10

Dforce/N 100, work done/J 1000

✓ Correct answer

C: force/N 100, work done/J 10

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Topic: Energy & Work, O-Level Physics (syllabus 5054). Multiple choice, 1 mark.
Source: O-Level Physics, Oct/Nov 2015 Paper 1 Variant 2, question 15.

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