A fluid is the one, which___________________?
Correct answer: D. Cannot remain at rest under the action of shear force
- A. Permanently resists distortion
- B. Continuously expands till it fills any container
- C. Is incompressible
- D. Cannot remain at rest under the action of shear force
Explanation
A fluid cannot sustain a shear force at rest, so even a small persistent shear stress causes continuous deformation. Resistance to permanent distortion is a property of a solid, not a fluid.
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