a) What is transport phenomenon? Obtain an expression for:
i) the average number of molecules crossing an arbitrary plane from either side per
unit area per second is n ,v
ii) the average height at which a molecule makes its last collision before crossing
the plane is .
3
2
λ
iii) Using the results in (i) and (ii) obtain an expression for viscosity of the gas.
iv) Discuss its pressure and temperature dependence.
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