WBJEE · Physics · Mechanical Properties of Fluids
A gas bubble of \(2 \mathrm{cm}\) diameter rises througha liquid of density \(1.75 \mathrm{g} \mathrm{cm}^{-3}\) with a fixed speed of \(0.35 \mathrm{cms}^{-1}\). Neglect the density of the gas. The coefficient of viscosity of the liquid is
- A 870 poise
- B 1120 poise
- C 982 poise
- D 1089 poise
Answer & Solution
Correct Answer
(D) 1089 poise
Step-by-step Solution
Detailed explanation
The gas bubble is rising through the liquid of densily \(1.75 \mathrm{g} / \mathrm{cm}^{3}\) with constant speed. The acting forces on bubble are Buoyancy force of liquid \(=F_{0}\) (in upward direction) Viscous force due to liquid = \(F_{V}\), (in downward direction)…
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