Question

A large bottle is fitted with a siphon made of capillary glass tubing. Compare the Co-efficient of viscosity of water and petrol if the time taken to empty the bottle in the two cases is in the ratio 2:5. Given specific gravity of petrol = 0.8  

Answer 1

Q₁ = πP₁R⁴/8η₁l 

Q₁ = rate of flow of liquid in case 1 

P₁ = Pressure

R = Radius 

s₁ = specific gravity in 1^st Case

η₁= Co-efficient of viscosity 

s₂ = Density of water

Q₁ = v/t₁ 

v = volume of liquid 

t₁ = time Case 1