Question

The correct figure representing isothermal and adiabatic expansion of an ideal gas from a particular initial state is:

• A. A
• B. B
• C. C
• D. D

Answer 1

The correct option is A A

We know that, for an isothermal process, PV = constant

For an adiabatic process,
$P{V}^{\gamma }$ = constant

As $\gamma >1$, P will vary more in an adiabatic process than in an isothermal process on making the same change in volume. Thus, making the curve steeper in case of an adiabatic process.