Question

What is reflection of light ?? Types of reflection define all types of reflection ??

Answer 1

When a ray of light approaches a smooth polished surface and the light ray bounces back, it is called the reflection of light. 

There are two types of reflection:
1.) Mirror reflection
2.)Diffuse reflection
3.)Specular reflection

Answer 2

Reflection is the change in direction of a wavefront at an interface between two different media so that the wavefront returns into the medium from which it originated.