A) \[{{C}_{V}}({{T}_{i}}-{{T}_{f}})\]
B) \[{{C}_{P}}({{T}_{i}}-{{T}_{f}})\]
C) \[\frac{1}{2}({{C}_{P}}+{{C}_{V}})(Ti-{{T}_{f}})\]
D) \[({{C}_{P}}-{{C}_{V}})({{T}_{i}}-{{T}_{f}})\]
Correct Answer: A
Solution :
\[\Delta U=\mu {{C}_{V}}\Delta T=1\times {{C}_{V}}({{T}_{f}}-{{T}_{i}})=-\,{{C}_{V}}({{T}_{i}}-{{T}_{f}})\] Þ |DU| = CV (Ti ? Tf)
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