The time taken for gravity flow of a fixed volume of liquid (as in Redwood viscometer) is directly proportional to its __________________?
Correct answer: D. Ratio of absolute viscosity to density
- A. Absolute viscosity
- B. Reynolds number
- C. Density
- D. Ratio of absolute viscosity to density
Explanation
Gravity-driven flow through a viscometer is governed primarily by kinematic viscosity, which is the ratio of absolute viscosity to density, μ/ρ. Thus the flow time is proportional to μ/ρ under fixed apparatus conditions.
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