An ideal gas undergoes a reversible isothermal expansion from a state i to f. The change in entropy ΔS(i→ f) is - VgyanHub

Question:

An ideal gas undergoes a reversible isothermal expansion from a state i to f. The change in entropy ΔS(i→ f) is

Options :

(a) zero
(b) less than zero
(c) greater than zero
(d) not defined for the process

Answer :

(b) less than zero

Answer Steps :

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