# The number density of molecules of a gas depends on their distance r from the origin as . Then the total number of molecules is proportional to: Option 1)   Option 2) Option 3) Option 4)

Maxwell's distribution of molecular speed -

- wherein

N = total no. of molecules.

m = mass of molecule.

,K,T all have usual meanings.

u = velocity of one particle.

Total number of molecule =

Number of molecules is proportional to

Option 1)

Option 2)

Option 3)

Option 4)

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