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JSS3: BASIC SCIENCE - 2ND TERM

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Reflection of light is simply the bouncing back of light rays when it falls on a surface. A plane mirror is used to show the reflection of light. A mirror is plane if it has a flat surface. In a plane mirror, the ray that strikes the surface is called Incident Ray and the ray which comes back from the mirror is called Reflected Ray

A line at right angles to the mirror where the two rays touch is called a Normal.

The angle between the incident ray and the normal is called angle of reflection which is always equal. 

Reflection may be regular (or specular) or diffuse. It is regular when it falls on a smooth surface and scatters (diffuse) when the light falls on materials that are not very smooth e.g clothing materials or cardboard paper. Diffuse reflection is the reflection of light from a surface such that an incident ray is reflected at many angles, rather than at just one angle as in the case of specular reflection.

Reflection of light

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