Moderate

The speed of efflux of a liquid streaming out of an orifice 'O' in a tank depends on:

Correct answer: D. h2-h1

  • A. Can't be predicted
  • B. h2
  • C. h1
  • D. h2-h1

Explanation

v=√2g(h1-h2 ; where h1-h2 is the height above the orifice which is directly proportional to v.

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About Fluid Dynamics

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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