The average velocity of molecules in a gas in equilibrium is :

proportional to

\sqrt{T}

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proportional to

T

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proportional to

T^{2}

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equal to zero

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Solution

The correct option is A proportional to $\sqrt{T}$
Average velocity of the gas is given by:
$v_{a v e r a g e} = \sqrt{\frac{8 R T}{π M}}$
Hence average molecular velocity is directly proportional to $\sqrt{T}$

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