1.

Number of particles is given by \[n=-D\frac{{{n}_{2}}-{{n}_{1}}}{{{x}^{2}}-{{x}_{1}}}\] 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

A. \[M_{0}^{{}}LT_{{}}^{2}\]  
B. \[M_{{}}^{0}L_{{}}^{2}T_{{}}^{-4}\]
C. \[M_{{}}^{0}L_{{}}^{{}}T_{{}}^{-3}\]      
D. \[M_{{}}^{0}L_{{}}^{2}T_{{}}^{-1}\]
Answer» E.


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