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Chapter 17 of 29
Syllabus

Mechanical Properties of Solids — Syllabus

Telangana Open School (TOSS) · Class 12 · Physics

What Mechanical Properties of Solids covers in Telangana Open School (TOSS) Class 12 Physics: 4 topics, for the 2026-27 session.

49 questions30 flashcards9 formulas & key relations5 concepts

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4 Topics · Telangana Open School (TOSS) Class 12 Physics · 2026-27

Topics in Mechanical Properties of Solids

1

Elasticity and Plasticity

  • Elasticity is the ability of a body to regain its original shape and size after removal of deforming force.
  • Plasticity is the property of a body to retain its deformed shape permanently.
  • No material is perfectly elastic or perfectly plastic; real materials lie between these extremes.
2

Stress and Strain

  • Stress is the internal restoring force per unit area of cross-section.
  • Strain is the ratio of change in dimension to original dimension; it has no units.
  • Three types of stress: Longitudinal (tensile/compressive), Normal (volume), and Shearing.
3

Stress-Strain Curve and Hooke's Law

  • Stress-strain graph shows how a material behaves under increasing load.
  • Region OA: Proportional limit — stress ∝ strain (Hooke’s Law).
  • Point B: Elastic limit — beyond this, permanent deformation occurs.
4

Moduli of Elasticity

  • Three moduli correspond to three types of strain.
  • Young’s Modulus (Y): Ratio of longitudinal stress to linear strain.
  • Bulk Modulus (B): Ratio of normal stress to volume strain.

Key Concepts

Central concept: Elasticity

StressStrainHooke's LawModuli of ElasticityStress-Strain CurveElastic Potential EnergyIntermolecular ForcesApplications of Elasticity

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Frequently Asked Questions

What are the important topics in Mechanical Properties of Solids for Telangana Open School (TOSS) Class 12 Physics?
Key topics in Mechanical Properties of Solids include Elasticity and Plasticity, Stress and Strain, Stress-Strain Curve and Hooke's Law, Moduli of Elasticity. Study these first, then practise questions on each for the Telangana Open School (TOSS) Class 12 board exam.
How should I revise Mechanical Properties of Solids for the Telangana Open School (TOSS) Class 12 board exam?
Learn the core ideas first, then work through the 49 practice questions on Mechanical Properties of Solids. 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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