A poly-atomic molecule (C_y=3 R, C_p=4 R., where is gas constant) goes from phase space poin A (P_A=10^5 {\Pa}, V_A=4 \times 10^{-6} {\m}^3) to point B (P_B=5. 10^4 {\Pa}, V_B=6 \times 10^{-6} {\m}^3) to point C (P_C=10^4 {\Pa}, V. =8 \times 10^{-6} {\m}^3 ). A to B is an adiabatic path and B to C is an isothermal path. The net heat absorbed pe unit mole by the system is : [29 Jan 2025 Shift 2]

Correct Answer is : 450R(ln4−ln3)

Thermodynamics Part 5

Section: Physics

Question : 50 of 69

Marks: +1, -0

A poly-atomic molecule (Cy=3R,Cp=4R., where is gas constant) goes from phase space poin A(PA=105‌Pa,VA=4×10−6m3) to point B(PB=5. 104‌Pa,VB=6×10−6m3) to point C(PC=104‌Pa,V. =8×10−6m3 ). A to B is an adiabatic path and B to C is an isothermal path. The net heat absorbed pe unit mole by the system is :

[29 Jan 2025 Shift 2]

500R‌ln‌2
500R(ln‌3+ln‌4)
400R‌ln‌4
450R(ln‌4−ln‌3)

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