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Syllabus

Light: Mirrors and Lenses — Syllabus

CBSE · Class 8 · Science

What Light: Mirrors and Lenses covers in CBSE Class 8 Science: 4 topics, for the 2026-27 session. Part of the CBSE Class 8 Science syllabus.

41 questions68 flashcards5 concepts

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4 Topics · CBSE Class 8 Science · 2026-27

Topics in Light: Mirrors and Lenses

1

1. Spherical Mirrors

  • Mirrors whose reflecting surfaces are spherical are called spherical mirrors.
  • A concave mirror has a reflecting surface curved inwards.
  • A convex mirror has a reflecting surface curved outwards.
2

2. Images Formed by Mirrors

  • A plane mirror always forms an erect image of the same size as the object.
  • In a concave mirror, when the object is close, the image is erect and enlarged.
  • In a concave mirror, when the object moves farther away, the image becomes inverted and first enlarged, then diminished.
3

3. Uses of Concave and Convex Mirrors

  • Reflectors of torches and headlights of cars and scooters are concave in shape.
  • A dentist uses a concave mirror to get an enlarged view of teeth when held close.
  • Most modern telescopes are reflecting telescopes with a large concave mirror as the main mirror.
4

4. Laws of Reflection

  • The ray of light falling on a mirror is called the incident ray.
  • The ray that comes back from the mirror is called the reflected ray.
  • The normal is a line making 90° to the mirror surface at the point of incidence.

Key Concepts

Central concept: How mirrors and lenses form and change images by reflection and refraction

Spherical mirrorsReflection of lightImage formation in mirrorsUses of mirrorsConverging and diverging beamsSolar concentratorsLensesImage formation in lenses

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Frequently Asked Questions

What are the important topics in Light: Mirrors and Lenses for CBSE Class 8 Science?
Key topics in Light: Mirrors and Lenses include Spherical Mirrors, Images Formed by Mirrors, Uses of Concave and Convex Mirrors, Laws of Reflection. Study these first, then practise questions on each for Class 8 exams.
How should I revise Light: Mirrors and Lenses for Class 8 exams?
Learn the core ideas first, then work through the 41 practice questions on Light: Mirrors and Lenses. 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 CBSE Class 8 Science Syllabus

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