If a gas has f degrees of freedom, the ratio Cp/Cv of the gas is
A
1+f2
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B
1+f2
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C
12+f
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D
1+2f
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Solution
The correct option is D1+2f We know that Cv=no.ofdegreesoffreedom×molargasconstant/2 orCv=fR/2.AlsoCP−Cv=R Therefore CpCv=RCv+1=2RfR+1=2f+1 Hence, the correct choice is (d).