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The number of particles crossing per unit area perpendicular to Z axis per unit time is given by N=-D{N2-N1}/ {Z2-Z1} , where N2 and N1 are the number of particles per unit volume at Z2 and Z1 respectively. What is the dimensional formula for D? |
| Answer» The number of particles crossing per unit area perpendicular to Z axis per unit time is given by N=-D{N2-N1}/ {Z2-Z1} , where N2 and N1 are the number of particles per unit volume at Z2 and Z1 respectively. What is the dimensional formula for D? | |