Question

The viscosity of paint determines how smoothly and easily the paint can be applied.
If the viscosity is too high, the finish will appear bumpy and if the viscosity is too low, the paint will run.
Paint viscosity too high Paint viscosity too low (a) State what is meant by viscosity.
(1)
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(b) Before paint is applied, its viscosity can be checked using a viscosity cup. A viscosity cup has a small hole at the bottom for the paint to drain through.
viscosity cup paint
The cup is filled with the paint to a fixed level and the time for the paint to drain from the bottom of the cup is measured. The time to drain the cup can then be converted to a viscosity using a table supplied by the paint manufacturer.

Explain why this method can be used to determine the viscosity of the paint?

Answer 1

Answer:

viscosity is internal force of the liquid which come into play when internal friction will applied to liquid