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Pressure vs Velocity

A box contain...

Question

A box contains n molecules of a gas. How will the pressure of the gas be effected, if the number of molecules is made 2n

Pressure will decrease

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Pressure will remain unchanged

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Pressure will be doubled

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Pressure will become three times

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Solution

The correct option is C
Pressure will be doubled

$P = \frac{1}{3} m n {¯ v}^{2}$

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