What are the general characteristics of light?

General characteristic of light are as follow:

1. Light is a form of energy produced by luminous objects.
2. Light travels in a straight line.
3. Light can travel through a vacuum.
4. Light can be reflected.
5. Light can be bent/refracted.
6.  Light travels with a speed of 3.0 $\times$ 108 m/s in a vacuum.

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