Q. 94.0( 4 Votes )

What is SI unit o

Answer :

Resistance to the flow of liquid is called viscosity.



is a velocity gradient, η is a viscosity coefficient, A is area

η =.

Putting, F = N, dx=m, A= m2,v=ms-1

η= N/m2. m/ms-1

η= Nsm-2

η is the proportionality constant , also known as coefficient of viscosity. SI unit of viscosity is Nsm-2 = Pascal second (Pa s = 1kgm-1s-1)

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