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What equation does the velocity potential of an incompressible fluid satisfy?
  1. Laplace's equation
  2. Euler's equation
  3. Poisson's equation
  4. None of these
Explanation

The velocity potential (φ) of an incompressible fluid satisfies Laplace's equation:

∇²φ = 0

This equation represents the conservation of mass for an incompressible fluid.

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