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Syllabus

Light - Reflection and Refraction — Syllabus

CBSE · Class 10 · Science

What Light - Reflection and Refraction covers in CBSE Class 10 Science: 3 topics, for the 2026-27 session. Part of the CBSE Class 10 Science syllabus.

192 questions70 flashcards8 formulas & key relations5 concepts

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A labeled diagram illustrating the two laws of reflection: the angle of incidence equals the angle of reflection (∠i = ∠r), and the incident ray, reflected ray, and normal all lie in the same plane.
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3 Topics · CBSE Class 10 Science · 2026-27

Topics in Light - Reflection and Refraction

1

Reflection of Light and Spherical Mirrors

  • The angle of incidence equals the angle of reflection.
  • The incident ray, the normal, and the reflected ray lie in the same plane.
  • A plane mirror forms a virtual, erect image that is laterally inverted and equal in size to the object.
2

Refraction of Light and Refractive Index

  • Refraction is the bending of light when it passes from one transparent medium to another.
  • Light bends towards the normal when it goes from a rarer medium to a denser medium.
  • Light bends away from the normal when it goes from a denser medium to a rarer medium.
3

Lenses and Image Formation

  • A lens is a transparent material bounded by at least one spherical surface.
  • A convex lens is thicker at the middle than at the edges and converges light rays.
  • A concave lens is thinner at the middle and thicker at the edges and diverges light rays.

Key Concepts

Central concept: Light forms images and changes direction through reflection and refraction, using mirrors and lenses with definite rules, sign conventions, and formulas.

Reflection of lightSpherical mirrorsConcave mirrorConvex mirrorNew Cartesian Sign ConventionMirror formula and magnificationRefraction of lightLaws of refraction

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Frequently Asked Questions

What are the important topics in Light - Reflection and Refraction for CBSE Class 10 Science?
Key topics in Light - Reflection and Refraction include Reflection of Light and Spherical Mirrors, Refraction of Light and Refractive Index, Lenses and Image Formation. Study these first, then practise questions on each for the CBSE Class 10 board exam.
How should I revise Light - Reflection and Refraction for the CBSE Class 10 board exam?
Learn the core ideas first, then work through the 192 practice questions on Light - Reflection and Refraction. 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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