Question

What is \[\ce{SI}\] unit of viscosity coefficient (η)?

Options

• Pascal

• Nsm^–2 

• km^–2s 

• Nm^–2 

Answer 1

Nsm^–2 

Explanation:

Viscosity coefficient (η) = `"Force"/("Area" xx "velocitygradient")`

\[\ce{SI}\] unit of η  = Nsm^–2