Number of particles is given by \(r = - \rho \frac{r_2 - r_1}{x_2 - x_1}.\) crossing a unit area perpendicular to X -axis in unit time, where n. and \eta_2 are number of particles per unit volume for the value of \(\times\) meant to x_i and X. . Find dimensions of \partial called as diffusion constant
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[ n ] = Number of particles crossing a unit area in unit time = \(\left[\mathrm{L}^{-2} \mathrm{T}^{-1}\right]\)
\(\left[ p \right]_z, \quad \left[ n_1 \right]\) number of particles per unit volume = [ L –3 ]
\(\left[ x_{2} \right] \quad \left[ x_{1} \right]\) = positions
\ \ \(D = \frac{[n][x_2 - x_1]}{[n_2 \cdot n_1]} = \frac{[L^{-2} T^{-1} / [L]]}{[L^{-2}]}\) = \(\left\{ 2^{i \tau \cdot 1} \right\}\)
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