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Question
The tangential force or viscous drag on any layer of the liquid is directly proportional to the velocity gradient `"dv"/"dx"`. Then the direction of dx velocity gradient is ____________.
Options
perpendicular to the direction of flow of the liquid
parallel to the direction of the flow of the liquid
opposite to the direction of the flow of the liquid
independent of the direction of the flow of liquid
MCQ
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Solution
The tangential force or viscous drag on any layer of the liquid is directly proportional to the velocity gradient `"dv"/"dx"`. Then the direction of dx velocity gradient is perpendicular to the direction of flow of the liquid.
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