Plane mirrors (I assume that's what you are talking about) produce virtual images in which the object distane equals the image distance. For B, see
https://answers.yahoo.com/question/index?qid=20110330202945AA1tAfT
33 A. If the woman is 2 meters in front of the mirror, how far behind the mirror will she see her image? B: Is this a real image or a virtual image? C: How could you prove your answer to B?
2 answers
A) the woman would see her image as far back as she goes as long as she stays focused in the center of the mirror. However, she couldn't see her image behind the mirror at all.
B) Real image
C) the image reflected is real
B) Real image
C) the image reflected is real