Kinetic Theory and Thermodynamics: Adiabatic vs Isothermal MCQ

Solve this quality-checked JEE multiple-choice question, then review the correct answer and explanation.

Timer-based practiceDetailed answer reviewMobile-friendly flow

Adiabatic vs IsothermalMediumQuestion 31044

Question

For the same expansion from V₁ to V₂, an adiabat is steeper than isotherm on P-V diagram because:

A
Pressure drops faster in isothermal
B
Pressure drops faster in adiabatic (gas cools, reducing pressure more)
Correct
C
Both slopes are equal
D
Isothermal involves no work

Pressure drops faster in adiabatic (gas cools, reducing pressure more)

Adiabat: PVγ = const. Isotherm: PV = const. Since γ > 1, adiabatic pressure drop is steeper.