CBSE 10 Science | 9. Light – Reflection and Refraction by Pavan | Learn Smarter
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9. Light – Reflection and Refraction

This chapter discusses the fundamental properties of light, focusing on the phenomena of reflection and refraction. It explains how light behaves with mirrors, including spherical mirrors and their applications, as well as the properties and behavior of lenses. The chapter covers key concepts such as the laws of reflection, image formation by mirrors and lenses, and the derivation of mirror and lens formulas, concluding with the concept of power in lenses.

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Sections

  • 9

    Light – Reflection And Refraction

    This section explores how light behaves when it encounters different surfaces, specifically focusing on reflection and refraction.

    Learning Practice

  • 9.1

    Reflection Of Light

    This section explores the principles of light reflection, particularly through mirrors and their applications.

    Learning Practice

  • 9.2

    Spherical Mirrors

    Spherical mirrors are categorized into concave and convex mirrors, which play a crucial role in image formation through reflection.

    Learning Practice

  • 9.2.1

    Image Formation By Spherical Mirrors

    This section covers the principles of image formation by spherical mirrors, including the characteristics of images formed by concave and convex mirrors.

    Learning Practice

  • 9.2.2

    Representation Of Images Formed By Spherical Mirrors Using Ray Diagrams

    This section discusses how to represent the images formed by spherical mirrors using ray diagrams.

    Learning Practice

  • 9.2.3

    Sign Convention For Reflection By Spherical Mirrors

    The section defines the New Cartesian Sign Convention for spherical mirrors, outlining how distances are measured in optics.

    Learning Practice

  • 9.2.4

    Mirror Formula And Magnification

    This section explains the relationship between object distance, image distance, and focal length in a spherical mirror, known as the mirror formula, and introduces the concept of magnification.

    Learning Practice

  • 9.3

    Refraction Of Light

    Refraction of light is the bending of light rays when they pass from one medium to another.

    Learning Practice

  • 9.3.1

    Refraction Through A Rectangular Glass Slab

    Refraction occurs when light passes through a rectangular glass slab, bending at the boundary between different media.

    Learning Practice

  • 9.3.2

    The Refractive Index

    The refractive index quantifies how much light bends when transitioning between different media.

    Learning Practice

  • 9.3.3

    Refraction By Spherical Lenses

    The section discusses the sign convention applied to distances and measurements in spherical lenses, outlining how focal lengths differ for convex and concave lenses.

    Learning Practice

  • 9.3.4

    Image Formation By Lenses

    Lenses form images through the refraction of light, resulting in various image characteristics based on the object's position.

    Learning Practice

  • 9.3.5

    Image Formation In Lenses Using Ray Diagrams

    This section discusses how ray diagrams can be used to represent image formation by lenses.

    Learning Practice

  • 9.3.6

    Sign Convention For Spherical Lenses

    The section discusses the sign convention applied to distances and measurements in spherical lenses, outlining how focal lengths differ for convex and concave lenses.

    Learning Practice

  • 9.3.7

    Lens Formula And Magnification

    This section explains the lens formula and the concept of magnification related to spherical lenses.

    Learning Practice

  • 9.3.8

    Power Of A Lens

    The power of a lens is defined as the reciprocal of its focal length, indicating how strongly it converges or diverges light.

    Learning Practice

References

NCERT Study Material

Class Notes

Memorization

What we have learnt

  • Light travels in straight l...
  • Mirrors and lenses can form...
  • The New Cartesian Sign Conv...

Final Test

Revision Tests