Question

A wall reflects light and a mirror also reflects lights. What difference is there in the way they reflect light

Answer 1

The reflection from wall is diffused or irregular reflection because the surface of wall is rough.
The reflection from mirror is regular reflection because the surface of mirror is smooth.

Answer 2

a wall reflects light but no image is formed on the wall and the light falls on it does not reflect completely whereas the reflects on the mirror and a image is also formed.