The gases are absolute temperature of $300 K$ and $350 K$ respectively. The ratio of the average kinetic energy of their molecules is :

7:6

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6:7

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36:49

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49:36

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Solution

The correct option is B 6:7
We know that kinetic energy of gas is given as $K E = \frac{3}{2} K T$

So, $\frac{{K E}_{1}}{{K E}_{2}} = \frac{T_{1}}{T_{2}}$

$\Rightarrow \frac{300}{350} = \frac{6}{7}$

The ratio of the average kinetic energy of their molecules is $6 : 7$ .

Hence, the correct option is $A$ .

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The gases are absolute temperature of 300 K and 350 K respectively. The ratio of the average kinetic energy of their molecules is :

The correct option is B 6:7We know that kinetic energy of gas is given as KE=32KTSo, KE1KE2=T1T2⇒300350=67The ratio of the average kinetic energy of their molecules is 6:7.Hence, the correct option is A.

The gases are absolute temperature of $300 K$ and $350 K$ respectively. The ratio of the average kinetic energy of their molecules is :