alleryThe slope of an adiabatic curve in PV diagram (dP/dV)_adiabatic equals:
A-PV
B-P/V
C-(γP/V)²
D-γP/V
Answer & Solution
Correct answer: D. -γP/V
PV^γ = const.
**Differentiating:** γPV^(γ-1)dV + V^γ dP = 0
→ dP/dV = -γP/V. So adiabatic slope = γ × isothermal slope at same point — adiabatics are STEEPER.
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