Q
The normal stress is same in all directions at a point in a fluid ___________________?
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A
A. Only when the fluid is frictionless
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B
B. Only when the fluid is incompressible and has zero viscosity
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C
C. When there is no motion of one fluid layer relative to an adjacent layer
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D
D. Irrespective of the motion of one fluid layer relative to an adjacent layer
Correct Answer:
C. C. When there is no motion of one fluid layer relative to an adjacent layer
