MHT CET Medical202625 April 2026Morning ShiftPhysicsThermodynamicsActual
Which of the following is NOT a correct equation for adiabatic process?
Options
- APV^ = constant
- BTV^ -1 = constant
- CP^ 1- T^ = constant
- DP^ -1 T^ -1 = constant
Correct answer
D. P^ -1 T^ -1 = constant
Step-by-step solution
For an ideal gas undergoing a reversible adiabatic process, the fundamental relationship between pressure ( P ) and volume ( V ) is given by: PV^ = constant Using the ideal gas equation, PV = nRT , we can express volume as V = nRT P . Substituting this into the adiabatic equation: P ( nRT P )^ = constant P P^ - T^ = constant (nR)^ P^ 1- T^ = constant This confirms that P^ 1- T^ = constant is a valid equation for an adiabatic process, which corresponds to option (3). Similarly, we can substitute P = nRT V into the o