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Syllabus

Flow of Liquids — Syllabus

ICSE · Class 11 · Physics

What Flow of Liquids covers in ICSE Class 11 Physics: 4 topics, for the 2026-27 session. Part of the ICSE Class 11 Physics syllabus.

41 questions40 flashcards7 formulas & key relations5 concepts

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A comparison diagram illustrating the distinct characteristics of streamline (laminar) flow and turbulent flow in fluids.
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4 Topics · ICSE Class 11 Physics · 2026-27

Topics in Flow of Liquids

1

1. Ideal Liquid, Stream-lined Flow, and Turbulent Flow

  • An ideal liquid has zero compressibility and zero viscosity.
  • Zero compressibility means volume does not change on pressing.
  • Zero viscosity means no tangential friction between layers.
2

2. Viscosity, Velocity Gradient, and Newton's Law of Viscosity

  • Viscosity is the property by virtue of which a liquid opposes relative motion between adjacent layers.
  • Viscous force acts like internal friction.
  • Velocity gradient is the rate of change of velocity with distance perpendicular to flow.
3

3. Stokes' Law, Terminal Velocity, and Applications

  • A falling body in a viscous fluid first accelerates, then reaches terminal velocity.
  • Terminal velocity is the constant velocity attained when net force becomes zero.
  • Stokes' law gives viscous force on a small sphere moving in a homogeneous viscous medium.
4

4. Flow Through Pipes and Poiseuille's Formula

  • Rate of flow through a pipe depends on viscosity, radius of pipe, and pressure gradient.
  • Poiseuille's relation is used to determine viscosity of a liquid.
  • Viscous resistance increases with length of pipe and decreases strongly with radius.

Key Concepts

Central concept: Flow of Liquids and the physical principles that control liquid motion, resistance, and pressure-energy changes

Ideal LiquidTypes of FlowCritical Velocity and Reynold's NumberViscosityStokes' Law and Terminal VelocityPoiseuille's FormulaPrinciple of ContinuityBernoulli's Theorem

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Frequently Asked Questions

What are the important topics in Flow of Liquids for ICSE Class 11 Physics?
Key topics in Flow of Liquids include Ideal Liquid, Stream-lined Flow, and Turbulent Flow, Viscosity, Velocity Gradient, and Newton's Law of Viscosity, Stokes' Law, Terminal Velocity, and Applications, Flow Through Pipes and Poiseuille's Formula. Study these first, then practise questions on each for Class 11 exams.
How should I revise Flow of Liquids for Class 11 exams?
Learn the core ideas first, then work through the 41 practice questions on Flow of Liquids. Revise definitions regularly and use flashcards for quick recall before the exam.

Sources & Official References

Content is aligned to the official syllabus. Refer to the board website for the latest curriculum.

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All ICSE Class 11 Physics Syllabus

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