An ideal fluid flows from a tube of uniform cross-section shown in the figure. The liquid has velocities va and vb and pressure Pa and Pb at point A and B respectively. The quantity which will remain unaffected are:
Correct answer: D. Both 'a' and 'b'
- A. vₐ = vᵦ
- B. Pₐ = Pᵦ
- C. Vₐ > Vᵦ
- D. Both 'a' and 'b'
Explanation
Both velocity and pressure will remain same for the same cross-sectional area of pipe.
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Fluid flow is described through speed, pressure and density, including steady flow and the equation of continuity for conserving mass. Bernoulli's equation relates pressure, speed and height, while fluid drag and terminal velocity explain why a falling object eventually moves at constant speed when drag balances its weight.
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