Do plane mirrors make a room appear twice as large?

[Kathi201]

I am trying to understand the laws of reflection better.
I know that if a large flat mirror is placed on one wall of a room that the room appears larger than it actually is, but by how much? Is it exactly twice as big?

Also, How does the size of the image that is reflected from a plane mirror relate to the size of the actual object?

 

[LowlyPion]

I am trying to understand the laws of reflection better.
I know that if a large flat mirror is placed on one wall of a room that the room appears larger than it actually is, but by how much? Is it exactly twice as big?

Also, How does the size of the image that is reflected from a plane mirror relate to the size of the actual object?

How far does the light travel to reach your eye?