Question

Assertion A: Bingham plastic fluid shows solid characteristics when stress applied is low.
Reason R: Before beginning of flow Bingham plastic fluid have finite yield stress.
In the light of the above statements, choose the most appropriate answer:

• A. Both A and R are correct and R is the correct explanation of A
• B. Both A and R are correct but R is NOT the correct explanation of A
• C. A is correct but R is not correct
• D. A is not correct but R is correct

Hint:

Think of a Bingham plastic as a "Lazy Fluid." It refuses to move (stays solid) until you push it hard enough (exceed the yield stress). Once it starts moving, it often behaves linearly like a Newtonian fluid.

Answer 1

The Correct Option is A