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What happens to the coefficient of viscosity if the temperature increases?

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+1 vote
in Fluid Mechanics by (118k points)
What happens to the coefficient of viscosity if the temperature increases?

(a) Increases

(b) Decreases

(c) Remains the same

(d) Independent of temperature

I got this question in my homework.

My question is from Methods of Determination of Coefficient of Viscosity in section Viscous Flow & Turbulent Flow of Fluid Mechanics

1 Answer

+2 votes
by (362k points)
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Best answer
The correct answer is (b) Decreases

The best explanation: With the increase in temperature, the coefficient of viscosity of fluid decreases. This happens due to the weakening of bonds between the molecules. Because of its dash pot coefficient, the flow attains peak deformation.

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