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The number of particles is given by n = ...

The number of particles is given by `n = -D(n_(2) - n_(1))/( x_(2) - x_(1))` crossing a unit area perpendicular to X - axis in unit time , where `n_(1)and n_(2)` are particles per unit volume for the value of `x` meant to `x_(2) and x_(1)` . Find the dimensions of `D` called diffusion constant.

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Number of particles is given by n=-D(n_(2)-n_(1))/(x_(2)-x_(1)) crossing a unit area perpendicular to X -axis in unit time, where n_(1) and n_(2) are number of particles per unit volume for the value of x meant to x_(2) and x_(1) . Find dimensions of D called as diffusion constant

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SL ARORA-Units and Measurements-Exercise
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