In an adiabatic process, the state of a gas is changed from ${P_1},{V_1},{T_1} $ to ${P_2},{V_2},{T_2}$. Which of the following relation is correct
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(a) Adiabatic relation between $T$ and $V$ is
$T V_{1}^{\gamma-1}=$ constant
$\therefore \quad T_{1} V_{1}^{\gamma-1}=T_{2} V_{2}^{\gamma-1}$
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