Which is the correct statement - Vidyadip

MCQ

Which is the correct statement

✓
For an isothermal change $P V=$ constant
B
In an isothermal process the change in internal energy must be equal to the work done
C
For an adiabatic change $\frac{P_2}{P_1}=\left(\frac{V_2}{V_1}\right)^\gamma$, where $\gamma$ is the ratio of specific heats
D
In an adiabatic process work done must be equal to the heat entering the system

✓

Answer

Correct option: A.

For an isothermal change $P V=$ constant

(a) Since $P V=R T$ and $T=$ constant; $\therefore P V=$ constant.

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