[amp_mcq option1=”linear” option2=”parabolic” option3=”hyperbolic” option4=”inverse type” correct=”option1″]
The correct answer is A. linear.
A Newtonian fluid is a fluid in which the stress (a measure of internal forces) at a point is linearly proportional to the strain (a measure of deformation) at that point. This means that the more a Newtonian fluid is deformed, the more stress it will experience.
A parabolic stress-strain relation would mean that the stress is proportional to the square of the strain. This is not the case for Newtonian fluids.
A hyperbolic stress-strain relation would mean that the stress is proportional to the cube of the strain. This is also not the case for Newtonian fluids.
An inverse stress-strain relation would mean that the stress is inversely proportional to the strain. This is also not the case for Newtonian fluids.
In conclusion, the stress-strain relation of the Newtonian fluid is linear.