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A square hole of side length is made at a depth of h and a circular hole of radius r is made at a depth of 4 ~h from the surface of water in a water tank kept on a horizontal surface. If

Options

  1. A2
  2. B3
  3. C3
  4. D2

Correct answer

A. 2

Step-by-step solution

As A₁ v₁=A₂ v₂ (Principle of continuity) or, ^2 2 g h = r^2 2 g 4 h (Efflux velocity = 2 gh ) r^2= ^2 2 or r= ^2 2 = 2

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