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Syllabus

Elasticity — Syllabus

ICSE · Class 11 · Physics

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

41 questions35 flashcards8 formulas & key relations5 concepts

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An infographic comparing and illustrating the behavior of different types of solid materials (elastic, plastic, ductile, brittle, malleable) under applied stress, showing their deformation and fractur
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4 Topics · ICSE Class 11 Physics · 2026-27

Topics in Elasticity

1

Basic ideas: deforming force, elasticity, and limit of elasticity

  • A deforming force changes the size, shape, or both of a body.
  • The change produced in a body is called deformation.
  • Elasticity is the property that helps a body oppose deformation and recover its original state after the force is removed.
2

Stress and strain

  • Stress is the internal restoring force acting per unit area of the cross-section of a deformed body.
  • Stress is measured by external force per unit area in equilibrium.
  • Strain is the change in unit size of a body.
3

Hooke’s law and stress-strain graph

  • Hooke showed experimentally that if strain is small, stress is proportional to strain.
  • The ratio stress/strain is a constant for a material and is called modulus of elasticity.
  • If strain is longitudinal, the modulus is Young’s modulus.
4

Young’s modulus and extension of wires

  • Young’s modulus is defined for longitudinal stress and longitudinal strain.
  • It can be determined only for solids.
  • A body like a wire shows longitudinal extension when pulled by equal and opposite forces along its length.

Key Concepts

Central concept: Elasticity in solids and related elastic properties

Deforming force and deformationElasticityElastic behavior classesLimit of elasticityStressStrainHooke's lawStress-strain graph

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Frequently Asked Questions

What are the important topics in Elasticity for ICSE Class 11 Physics?
Key topics in Elasticity include Basic ideas: deforming force, elasticity, and limit of elasticity, Stress and strain, Hooke’s law and stress-strain graph, Young’s modulus and extension of wires. Study these first, then practise questions on each for Class 11 exams.
How should I revise Elasticity for Class 11 exams?
Learn the core ideas first, then work through the 41 practice questions on Elasticity. 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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