Light Properties

“Reflection and Refraction of Light”

 

Light Properties

Light is a form of radiation (In diagrams, lines called rays)

Light travels in straight lines

Light transfers energy and travels as waves

Light can travel through empty space

Light is the fastest thing

 

Objects

Sun, light bulbs, and TV screens are luminous. However, most objects are non-luminous which reflect lights only.

 

Reflection of light on a plane mirror

A ray of light is a line drawn to show the path that the light waves take. We need to study what happens when an incident light ray (a light ray that is going to fall on a surface) hits a mirror and is reflected off.

Light rays are reflected from mirrors in such a way that

 

The laws of reflection

  • The incident ray, the reflected ray and the normal at the point of incidence lie in the same plane.
  • The angle of incidence is equal to the angle of reflection.

 

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