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Question

The number of particles crossing the unit area perpendicular to the x –axis per unit time is given by:
N=D(n2n1x2x1)
Where n1 and n2 are the numbers of particles per unit volume for the values of x meant to be x1 and x2 respetively. What is the dimensional formula for the diffusion constant D?


Your Answer
A
[M0LT2]
Your Answer
B
[M0L2T4]
Your Answer
C
[M0LT3]
Correct Answer
D
[M0L2T1]

Solution

The correct option is D [M0L2T1]
N=D(n2n1x2x1)[M0L2T1]=D(M0L3T0M0L1T0)
D=M0L2T1

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