# In an ideal gas at temperature T, the average force that a molecule applies on the walls of a closed container depends on T as T tp the power q. A good estimate for q is :

Pressure of a gas -

$P= \frac{1}{3}mn< v^{2}>$

- wherein

m = mass of a molecule

n = number of molecule /volume

< v2 > = Rms velocity

Force $\alpha \frac{\alpha P}{dt}$ (Rate of change of momentum)

$=\frac{mv^{2}}{L}$

L is length of container  and v2 is mean square velocity

$v^{2}\alpha\ T$

$\therefore\ \;F \alpha\ T$

Correct option is 2.

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