Final answer:
During a reversible adiabatic change, the temperature of a perfect gas varies according to T ∝ V^(γ-1).
Step-by-step explanation:
In a reversible adiabatic change, the temperature of a perfect gas varies according to T ∝ V^(γ-1), where V is the volume and γ is a constant that depends on the gas. The relationship between temperature and volume in a reversible adiabatic change can be derived using the First Law of Thermodynamics and the ideal gas law.