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 -
m = mass of a molecule
n = number of molecule /volume
< v2 > = Rms velocity
Force (Rate of change of momentum)
L is length of container and v2 is mean square velocity
Correct option is 2.