Correct Answer - Option 2 : s
-1
CONCEPT:
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Velocity gradient: The difference of velocity of fluid layers that are adjacent to each other is known as velocity gradient.
\(velocity~gradient= {\Delta v\over \Delta x}\)
EXPLANATION:
The velocity gradient is given by:
\(velocity~gradient= {\Delta v\over \Delta x}\)
So the unit of velocity gradient = \( {meter/sec \over meter}=sec^{-1}\)
Hence the correct answer is option 2.
