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Which of the following is suitable for the jet of oil in an unbroken stream?

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in Aerodynamics by (773k points)
Which of the following is suitable for the jet of oil in an unbroken stream?

(a) temperature

(b) surface tension

(c) capillarity

(d) vapour pressure

I have been asked this question in an interview.

This intriguing question originated from Doublet Flow in division Inviscid & Incompressible Flow of Aerodynamics

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The correct option is (b) surface tension

For explanation I would say: The surface tension is the property of a fluid which occurs because of the cohesive force between the molecules of the fluid. In a jet of oil, the molecules of oil and the air interact and also the molecules of the oil try to acquire the minimum area.

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