The normal stress is same in all directions at a point in a fluid_______________?

Fluid Mechanics 26/04/2021

A. only when the fluid is frictionless
B. only when the fluid is incompressible and has zero viscosity
C. when there is no motion of one fluid layer relative to an adjacent layer
D. irrespective of the motion of one fluid layer relative to an adjacent layer
E. in case of an ideal fluid

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