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Question

The dimensional formula of coefficient of viscosity is
  1. [MLT1]
  2. [ML1T1]
  3. [M1L2T2]
  4. none

A
[M1L2T2]
B
none
C
[MLT1]
D
[ML1T1]
Solution
Verified by Toppr

Coefficient of viscosity is given by η=FAdzdv
Dimension of force F=[MLT2]
Dimension of Area A=[L2]
Dimension of velocity gradient dvdz=[T1]
Thus dimension of coefficient of viscosity η=[MLT2][L2][T1]=[ML1T1]

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