[" 44.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,then which of the "],[" following statements is correct? [AIEEE "2006]],[" (b) "T_(f),T_(i)" for reversible process but "T_(f)=T_(i)" for "],[" (c) "(T_(f))_(" reversible process ")],[" (d) "T_(f)=T_(i)" for both reversible and irreversible "],[" processes "]