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Question-1. What is viscosity and define the coeffient of viscosity?
Answer-1: In the presence of a relative motion to between two layers of a liquid, an opposing tangential forces sets in between the layers to destroy the relative motion. This property of the liquid is termed viscosity and is analogues to friction. The tangential force acting per unit area over two adjacent layers of the liquid for a unit velocity gradient if referred to as the coefficient of viscosity.
Question-2. How does the coefficient of viscosity changes with temperature?
Answer-2: The coefficient of viscosity decreases with rise in temperature in the case of liquids, but for gases it increases with rise in temperature.
Question-3. Can you use this method for all types of liquids?
Answer-3: No this method can be suitably applied for liquids of low viscosity. For highly viscous liquids, stokes?s method can be used.
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