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InterviewSolution
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The coefficient of viscosity `eta` of a liquid can be defined from the equationA. `F = eta u (d A)/(d x)`B. `F = eta A (du)/(dx)`C. `F = eta A (dx)/(du)`D. `F = eta u (dx)/(dA)` |
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Answer» Correct Answer - B `F = eta A (du)/(dx)` where `F` is the tangential force between any two adjacent layers of a liquid of area of contact `A , dx` is the distance between the layers, and `du` is the difference in their velocities. Viscosity coefficient is the tangetial force when velocity gradient is unity and the area of constant is unit area. |
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