A) 2/5
B) 3/5
C) 3/7
D) 5/7
Correct Answer: D
Solution :
[d] \[\Delta Q=n{{C}_{p}}\Delta T\] at constant pressure \[\Delta U=n{{C}_{v}}\Delta T\] Fraction \[=\frac{\Delta U}{\Delta Q}=\frac{{{C}_{V}}}{{{C}_{p}}}=\frac{1}{\gamma }=\frac{5}{7}\] for diatomic gas.
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