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CAIE A-Level Physics A2 16.2 The First Law of Thermodynamics Questions

Practise calculating gas work, applying the first law with signs and constructing thermodynamic energy balances for heat and internal-energy changes.

Syllabus
2028–2030
Course
Physics 9702
Level
A2

Exam points

  • calculate work during constant-pressure volume changes and distinguish work by and on the gas
  • apply the first law ΔU = q + W with correct signs to calculate energy changes, heat or work
  • construct and interpret thermodynamic energy balances

Covered syllabus points

16.2.1—W = p∆V for the work done when the volume of a gas changes at constant16.2.2—The first law of thermodynamics ∆U = q + W expressed

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