Light

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Light is the form of energy which helps the person to see anything correctly. Light is used to travel in straight line. The sound acts as the waves. It can change it's way. Nothing has higher speed that that of the speed of the light. The light has highest value in case of its speed.

The light can easily move in straight line, it is not possible for light to move in curve path .

Reflection - When the light falls on the surface of the body, then the angle of incidence and the angle of reflection are equal to each other.

Refraction - The process of the deviation of the light from the straight path, is called as a refraction.

Many people wants to know how it is possible for us to see the object. When the light is coming from the source of light, it goes to the body. Light comes from that object enters into our eyes. Then the eye sees an body. Luminous bodies are the body which emits light. Sun is called as the luminous bodies. The non-luminous bodies are the bodies which do not emit light themselves. Table, book are called as the non- luminous bodies. A bright body is visible to the observer of the light, when the light of the body is incident on it and from there the light reaches eyes.