In the given figure, which of the following lines shows the 'ideal plastic fluid"?

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DDA JE Civil 29 Mar 2023 Shift 3 Official Paper

Answer 1

Concept:

Fluids can be classified into five types:

Newtonian Fluid	The fluid that obeys Newton’s law of viscosity (shear stress is proportional to the rate of shear strain), is known as a Newtonian fluid.
Non-Newtonian Fluid	The fluid that doesn't obey Newton’s law of viscosity is known as a Newtonian fluid.
Ideal Fluid	A fluid is said to be ideal when it is incompressible and non-viscous. It is an imaginary fluid that doesn’t exist in reality.
Real Fluid	All the fluids are real as all the fluids possess viscosity.
Ideal Plastic Fluid	When the shear stress is proportional to the velocity gradient and shear stress is more than the yield value, it is known as ideal plastic fluid.