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Home » For a gas where ‘R’ is the universal gas constant and ‘’ is molar specific heat at constant volume. The gas is made up of molecules which areA) rigid diatomicB) monoatomicC) non-rigid diatomicD) polyatomic
For a gas \frac{R}{C_v}=0.4 where ‘R’ is the universal gas constant and ‘C_v’ is molar specific heat at constant volume. The gas is made up of molecules which are
A) rigid diatomic
B) monoatomic
C) non-rigid diatomic
D) polyatomic
Physics
For a gas \frac{R}{C_v}=0.4 where ‘R’ is the universal gas constant and ‘C_v’ is molar specific heat at constant volume. The gas is made up of molecules which are
A) rigid diatomic
B) monoatomic
C) non-rigid diatomic
D) polyatomic

1:Answer is (A)
\begin{array}{l} \frac{R}{C_{v}}=0.4 \Rightarrow \quad \frac{C_{p}-C_{v}}{C_{v}}=0.4 \\ \frac{C_{p}}{C_{v}}-1=0.4 \end{array}
\therefore \quad \frac{C_{p}}{C_{v}}=1.4 \Rightarrow r=1.4
As r=1.4 the gas is diatomic in nature. For example air molecules.

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