Fluid Mechanics
Path followed by water jet issuing from the bottom of a water tank will be a

Parabola (vertex being at the opening)
Horizontal straight line
Zig-zag path (which is geometrically undefined)
Hyperbola

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Fluid Mechanics
Steady flow occurs, when the

Conditions change steadily with time
Rate of the velocity change is constant
Conditions are the same at the adjacent points at any instant
Conditions do not change with time at any point

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