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Surface Tension : Viscosity and Poiseuille flow Video Lecture - JEE

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FAQs on Surface Tension : Viscosity and Poiseuille flow Video Lecture - JEE

1. What is surface tension?
Ans. Surface tension is the force acting on the surface of a liquid that tends to minimize its surface area. It is caused by the cohesive forces between the liquid molecules.
2. What is viscosity?
Ans. Viscosity is a measure of a fluid's resistance to flow. It is the internal friction between different layers of a fluid as they slide past each other. A higher viscosity means a thicker fluid that flows slowly.
3. How is surface tension related to viscosity?
Ans. Surface tension and viscosity are both properties related to the behavior of fluids. While surface tension refers to the force at the surface of a liquid, viscosity refers to the resistance of the fluid to flow. Both properties are influenced by intermolecular forces and can affect the flow behavior of fluids.
4. What is Poiseuille flow?
Ans. Poiseuille flow is a type of laminar flow that occurs in a long, cylindrical pipe when a constant pressure difference is applied across its ends. It is characterized by a parabolic velocity profile, with the maximum velocity occurring at the center of the pipe and decreasing towards the walls.
5. How does surface tension affect Poiseuille flow?
Ans. Surface tension can affect Poiseuille flow by altering the shape of the liquid-air interface. In the presence of surface tension, the liquid-air interface becomes curved, leading to a change in the pressure distribution within the fluid. This can affect the flow rate and the velocity profile of the Poiseuille flow.
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