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AP EAMCET2006PhysicsMechanical Properties of Fluids

An air bubble of radius 1 ~cm rises from the bottom portion through a liquid of density 1.5 ~g / cc at a constant speed of 0.25 ~cm ~s ⁻¹ . If the density of air is neglected, the coefficient of viscosity of the liquid is approximately, (In Pas) :

Options

  1. A13000
  2. B1300
  3. C130
  4. D13

Correct answer

C. 130

Step-by-step solution

v= 2 9 r^2 g = 2 9 r^2 g v = 2 9 (1 10⁻² )^2 (1.5 10^3 ) 9.8 0.25 10⁻² =130 pa-s.

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