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KVPY2014PhysicsMechanical Properties of Fluids

Water containing air bubbles flows without turbulence through a horizontal pipe which has a region of narrow cross- section. In this region the bubbles:

Options

  1. Amove with greater speed and are smaller than in the rest of the pipe
  2. Bmove with greater speed and are larger in size than in the rest of the pipe
  3. Cmove with lesser speed and are smaller than in the rest of the pipe.
  4. Dmove with lesser speed and are of the same size as in the rest of the pipe

Correct answer

B. move with greater speed and are larger in size than in the rest of the pipe

Step-by-step solution

array l A ₁ V ₁= A ₂ V ₂ P + 1 2 d v ²= Const. d = density P ₁ ~V ₁= P ₂ V ₂ array

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