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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

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$T_{f}$ and $T_{i}$ are both reversible and irreversible processes

${(T_{f})}_{irrev} > {(T_{i})}_{rev}$

$T_{f} > T_{i}$ for irreversible process but $T_{f}$ and $T_{i}$ for irreversible process

${(T_{f})}_{rev} > {(T_{i})}_{irrev}$

answer is B.

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Detailed Solution

Work done in reversible process is maximum. Thus $T_{f} < T_{i}$ in reversible process

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