Figure shows P vs V curve for various processes performed on an ideal gas. All the processes are polytropic ( P V m = constant ) . For 1, m = − 1 ; for 2, m = 0.5 ; for 3, m = 1 ; for 4, m = 1.25 and

Question

Figure shows P vs V curve for various processes performed on an ideal gas. All the processes are polytropic ( P V m = constant ) . For 1, m = − 1 ; for 2, m = 0.5 ; for 3, m = 1 ; for 4, m = 1.25 and for 5, m = γ .

TestHub · Accepted Answer

C = γ − 1 R ​ − m − 1 R ​ . C 1 ​ = γ − 1 R ​ + 2 R ​ = C V ​ + 2 R ​ = 2 C P ​ + C V ​ ​ (B true). C 2 ​ = C V ​ + 2 R = C P ​ + R > C P ​ (A false); C 5 ​ = γ − 1 R ​ − γ − 1 R ​ = 0 (C false); between 3 and 4, 1 < m < 1.25 gives negative C (D false). \end{document}

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