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The rate at which the particles of fluid can spread is called_______

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in Fluid Mechanics by (118k points)
The rate at which the particles of fluid can spread is called_______

(a) Surface tension

(b) Diffusivity

(c) Viscosity

(d) Kinetics

The question was posed to me by my school teacher while I was bunking the class.

My question is based upon Dimensionless Numbers in chapter Dimensional and Model Analysis of Fluid Mechanics

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Right option is (b) Diffusivity

Explanation: Diffusivity is defined as the rate of diffusion. It is a measure of particles at which the fluids or heat can spread. They are measured in different mediums. It can be defined on the basis of its properties.

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