Question

Explain why both a plain mirror and a sheet of paper reflect light but we can see an image of our face in the plane mirror but not on a sheet of paper?

Answer 1

1. This is because the reflection from a plane mirror is a regular reflection, but the reflection from the sheet of paper is a diffuse reflection.
2. Regular reflection allows us to see our image and diffuse reflection allows us to see the object on which the light is falling.