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Questions  

The viscous force F on a sphere of radius a moving in a medium with velocity v is given by F=6 πη a v . The dimensions of η are

a
ML-3
b
MLT-2
c
MT-1
d
ML-1 T-1

detailed solution

Correct option is D

[η]=Fav=MLT-2 L2 T-1L=ML-1 T-1

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