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A Newtonian fluid is defined as the fluid which?

a) Obeys hook’s law
b) Is compressible
c) Obey Newton’s law of viscosity
d) Is incompressible

Answer: c
Explanation: Newtonian fluid is defined as the fluid which obeys Newton’s law of viscosity for a Newtonian fluid. The viscosity curve, which is a plot of viscosity versus shear rate, will show a straight line at a constant value equal to h.

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