If at the same temperature and pressure, the densities of two diatomic gases are $d_{1}$ and $d_{2}$ respectively, the ratio of mean kinetic energy per molecule of gases will be :

1 : 1

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d_{1} : d_{2}

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\sqrt{d_{1}} : \sqrt{d_{2}}

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\sqrt{d_{2}} : \sqrt{d_{1}}

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Solution

The correct option is A $1 : 1$
Mean kinetic energy of gas depends only on the temperature. Here temperature is given same, so ratio of kinetic energies will be $1 : 1$ .

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