In an adiabatic expansion of a gas initial and final temperatures are $T_1$ and $T_2$ respectively then the…
In an adiabatic expansion of a gas initial and final temperatures are $T_1$ and $T_2$ respectively then the change in internal energy of the gas is
$\text {[R = gas constant, } \gamma=\text { adiabatic ratio }]$
The correct option is (C).
Concept: In adiabatic process work done is equal to change in internal energy as there is not enough time for heat transfer.
$\Delta \mathrm{W}=\Delta \mathrm{U}$
Work done can be calculated by relation: $\Delta \mathrm{W}=-\int \mathrm{p} \mathrm{dV}$.