Define co-efficient of viscosity. Write its dimension. How the viscosity of liquid and gas vary with temperature?
Answers
Answer:
Viscosity is defined as the degree up to which a fluid resists the flow under an applied force; it is measured by the tangential friction force acting per unit area divided by the velocity gradient under conditions of streamline flow. ... The Viscosity of a fluid described as the resistance of liquid.
The viscosity of liquids decreases rapidly with an increase in temperature, and the viscosity of gases increases with an increase in temperature. Thus, upon heating, liquids flow more easily, whereas gases flow more sluggishly.
Define co-efficient of viscosity. Write its dimension. How the viscosity of liquid and gas vary with temperature?
Viscosity is defined as the degree up to which a fluid resists the flow under an applied force; it is measured by the tangential friction force acting per unit area divided by the velocity gradient under conditions of streamline flow. ... The Viscosity of a fluid described as the resistance of liquid.
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How does the viscosity of a liquid vary with temperature?
The viscosity of liquids decreases rapidly with an increase in temperature, and the viscosity of gases increases with an increase in temperature. Thus, upon heating, liquids flow more easily, whereas gases flow more sluggishly.
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How does the co efficient of viscosity of a liquid depend on temperature and pressure?
The shear viscosity of the liquids that are used as lubricants increases with increasing pressure and decreases with increasing temperature and, at sufficiently large stress (rate), decreases with increasing shear stress (shear rate).
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What is the unit of co efficient of viscosity?
The coefficient of viscosity (η) is the ratio of applied stress to the rate of straining (change of strain with time). It is measured in units of poise; one poise equals one dyne-second per square centimetre.