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If a fluid does not undergo any sort of resistance by displacement. What substance is it called?

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+1 vote
in Fluid Mechanics by (118k points)
If a fluid does not undergo any sort of resistance by displacement. What substance is it called?

(a) Ideal fluid

(b) Solid

(c) Gas

(d) Water

I have been asked this question in semester exam.

Enquiry is from Power Absorbed in Viscous Flow topic in section Viscous Flow & Turbulent Flow of Fluid Mechanics

1 Answer

+2 votes
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Best answer
Correct option is (a) Ideal fluid

The best I can explain: An ideal fluid is a fluid that has zero viscosity. It results in a flow called as inviscid flow. In this flow there is no existence of shear force and the viscosity vanishes.

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