Fluid Mechanics
With the increase in depth, the hydrostatic pressure in an unaccelerated incompressible fluid (in a constant gravitational field)

Increases linearly
Remains constant
Decreases
Increases exponentially

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Fluid Mechanics
Shear stress in a fluid flowing in a round pipe

Remains constant over the cross-section
Varies parabolically across the cross-section
Is zero at the centre and varies linearly with the radius
Is zero at the wall and increases linearly to the centre

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