GATE Mechanical Engineering (ME) 2018 Shift 2 Solved Paper

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Question : 12 of 65

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For an ideal gas with constant properties undergoing a quasi-static process, which one of the following represents the change of entropy from state 1 to 2 ?

$∆ s=C_{p} In(\;{T_{2}}/{T_{1}})-R In(\;{P_{2}}/{P_{1}})$
$∆ S=C_{v} In(\;{T_{2}}/{T_{1}})-C_{p} In(\;{V_{2}}/{V_{1}})$
$∆ S=C_{ρ} In(\;{T_{2}}/{T_{1}})-C_{v} In(\;{P_{2}}/{P_{1}})$
$∆ S=C_{v} In(\;{T_{2}}/{T_{1}})+R In(\;{V_{1}}/{V_{2}})$

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