Assertion (A) : Paint is a non-Newtonian fluid.
Reason (R) : Its viscosity remains constant, and represented by a straight line.
1) Both (A) and (R) are individually true and (R) is the correct explanation of (A)
2) Both (A) and (R) are individually true but (R) is not the correct explanation of (A)
3) (A) is true but (R) is false
4) (A) is false but (R) is true
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A non-Newtonian fluid is a fluid that does not follow Newton's law of viscosity. Most commonly, the viscosity (the gradual deformation by shear or tensile stresses) of non-Newtonian fluids is dependent on shear rate or shear rate history. Some non-Newtonian fluids with shear-independent viscosity, however, still exhibit normal stress-differences or other non-Newtonian behavior. Many salt solutions and molten polymers are non-Newtonian fluids, as are many commonly found substances such as ketchup,[1]custard,[1] toothpaste, starch suspensions, maizena, honey,[1] paint, blood, and shampoo
A non-Newtonian fluid is a fluid that does not follow Newton's law of viscosity. Most commonly, the viscosity (the gradual deformation by shear or tensile stresses) of non-Newtonian fluids is dependent on shear rate or shear rate history. Some non-Newtonian fluids with shear-independent viscosity, however, still exhibit normal stress-differences or other non-Newtonian behavior. Many salt solutions and molten polymers are non-Newtonian fluids, as are many commonly found substances such as ketchup,[1]custard,[1] toothpaste, starch suspensions, maizena, honey,[1] paint, blood, and shampoo
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