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Optics -: What is optics? And It has mainly 3 contents that is - -》 Contents -: 1. Reflection of light 2. Refraction and deviation produced by prism 3. . Wave optics (link) Who want to study about 3rd content like 'Wave optics' after know about 1st content (reflection of light). Click here 👇👇 So we are derived the 1st content of Optics -: 1. Reflection of light -    -:  LIGHT It is an agent which produces in us the sensation of sight. It is a form of energy. No doubt this definition of light holds good only for a small portion of light, we shall be mainly concerned with light having this property. Various theories regarding the nature of light shall be discussedat appropriate places in this article. Some terms connected with light.  Some of the following terms shall be more oftenly used during study of Optics. 1. Source.  A body which emits light in all directions is said to be the source of light. The source may be a point one or an extended one. A source is ...