Q12.An air bubble of diameter 6 mm rises steadily through a solution of density 1750 kg m−3 at the rate of 0. 35 cm s−1 . The co-efficient of viscosity of the solution (neglect density of air) is ________ Pas (given, g = 10 m s−2 ).
What This Question Tests
This question requires applying Stokes' law and the principle of terminal velocity for a rising air bubble, equating viscous force to the buoyant force.
Concepts Tested
Formulas Used
F_viscous = 6πηrv
Buoyant force = ρ_liquid V g
Weight = ρ_air V g ≈ 0 (neglected)
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📋 Question Details
- Chapter
- Properties of Matter
- Topic
- Viscosity
- Year
- 2023
- Shift
- 08 Apr Shift 1
- Q Number
- Q12
- Type
- Numerical
- NCERT Ref
- Class 11 Physics Ch 10: Mechanical Properties of Fluids
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