Physics · 2020
JEE Main · 6 September 2020, Shift 1 · Q7
Molecules of an ideal gas are known to have three translational degrees of freedom and two rotational degrees of freedom. The gas is maintained at a…
Molecules of an ideal gas are known to have three translational degrees of freedom and two rotational degrees of freedom. The gas is maintained at a temperature of T.
The total internal energy, U of a mole of this gas, and the value of $\displaystyle \gamma\left(=\frac{\mathrm{C}_{\mathrm{p}}}{\mathrm{C}_{\mathrm{v}}}\right)$ are given, respectively, by :
Official answer
(3)
$\displaystyle \mathrm{U}=\frac{5}{2} \mathrm{RT}$ and $\displaystyle \gamma=\frac{7}{5}$
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