Answer: P is proportional to 1/V.
- A P is proportional to V
- B P is proportional to 1/V
- C V is proportional to T
- D P is proportional to T
Correct answer: B. P is proportional to 1/V
Explanation: Boyle's law: P proportional to 1/V (at constant T). Or PV = constant.
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.