Question

An ideal gas is allowed to expand both reversibly and irreversibly in an isolated system. If $T_i$ is the initial temperature and $T_f$ is the final temperature, which of the following statements is correct?
(a) $(T_f)_{rev} = (T_f)_{irrev}$
(b) $T_f$ = $T_i$ for both reversible and irreversible processes
(c) $(T_f)_{irrev} = (T_f)_{rev}$
(d) $T_f$ > $T_i$ for reversible process but $T_f$ = $T_i$ for irreversible process

Answer 1

(a) $(T_f)_{rev} = (T_f)_{irrev}$