Q: The number of particles crossing a unit area in a unit time is given by n =-D (n2-n1 )/(x2 – x1 ) where n1 and n2 are number of particles per unit volume for the value of x meant x1 and x2 . Find dimensions of D, the diffusion constant
(a) [M0 LT2 ]
(b) [ML2 T-4 ]
(c) [M0 LT-3 ]
(d) [M0 L2 T-1 ]
Ans: (d)