Answer: Doubles.
- A Halves
- B Stays same
- C Doubles
- D Quadruples
Correct answer: C. Doubles
Explanation: Charles law: V/T = constant. If T doubles (in Kelvin), V doubles at constant pressure.
The Carnot cycle alternates two isothermal steps (heat absorbed at TH, released at TC) with two adiabatic steps (no heat exchange); the enclosed loop area equals the net work output, and η = 1−TC/TH is the maximum possible efficiency between those two temperatures.
Concept context
Laws of thermodynamics, heat engines, entropy, and gas processes.