LAW OF REFLECTION

edu physics now discuss the physics of the LAW OF Reflection

well here is an explanation and drawings, safe learning

There are many examples indicating that light travels in a straight line. The image formed is the same as the object. It indicates that light travels in a straight line.







What happens when the light strikes the surface of an object ?
Part of the light will be reflected. And the other part ill be absorbed by the object ( and converted into heat energy).

For a very shiny object such as a silvered mirror, more than 95 5 of the light is reflected.

If the object is transparent such as glass or water, then most of the light will be transmitted.

Analysis of Reflection

• The normal is imaginary line perpendicular to the mirror surface.
• The angle of incidence is the angle between the incident ray and the normal.
• The angle of reflection is the angle between the reflected ray the normal.

The result of experiment concludes that :
1. The incident ray, the reflected ray and the normal at the point of incidence all lie on the same plane.
2. The angle of incidence i is equal to the angle of reflection r’ or witten as i = r’

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