[" 37.An ideal gas is allowed to expand both "],[" reversibly and irreversibly in an isolated "],[" system.If "T" is the initial temperature and "T_(f)" is "],[" the final temperature,which of the following "],[" statements is correct? "],[" 2) "T_(f)=T_(i)" for both reversible and irreversible "],[" processes "],[" 3) "(T_(f))_("inev")>(T_(f))_(rev)],[" 4) "T_(f)>T_(i)" for reversible process but "T_(f)=T_(i)" for "],[" irreversible process."]