A classical ideal gas is subjected to a reversible process in which its molar specific heat changes with temperature T as C T = \(C_V+R \frac{T}{T_0} \). If the initial temperature and volume are To and Vo. respectively, and the final volume is 2Vo, then the final temperature is
1
To / In 2
2
2To
3
To / [1 – ln 2]
4
To [1+ ln 2]