In a laminar flow the velocity of the liquid in contact with the walls of the tube is
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(a) The common application of laminar flow would be in the smooth flow of a viscous liquid through a tube or pipe. In that case, the velocity of flow varies from zero at the walls to a maximum along the center line of the vessel. The flow profile of laminar flow in a tube can be calculated by dividing the flow into thin cylindrical elements and applying the viscous force to them.
Hence, In a laminar flow the velocity of the liquid in contact with the walls of the tube is zero.
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