A) \[\frac{2}{5}\]
B) \[\frac{3}{5}\]
C) \[\frac{3}{7}\]
D) \[\frac{5}{7}\]
Correct Answer: D
Solution :
Fraction of supplied energy which increases the internal energy is given by \[f=\frac{\Delta U}{{{(\Delta Q)}_{P}}}=\frac{{{(\Delta Q)}_{V}}}{{{(\Delta Q)}_{P}}}=\frac{\mu {{C}_{V}}\Delta T}{\mu {{C}_{P}}\Delta T}=\frac{1}{\gamma }\] For diatomic gas \[\gamma =\frac{7}{5}\]Þ \[f=\frac{5}{7}\]
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