An object 5 millimeters high is located 15 millimeters in front of a plane mirror. How far from the mirror is the image located?
A. 5.0 millimeters
B. 7.5 millimeters
C. 15 millimeters
D. 30 millimeters
To determine the distance of the image from the mirror, we can use the concept of virtual images formed by plane mirrors.
When an object is placed in front of a plane mirror, the image formed is virtual and located at the same distance behind the mirror as the object is in front of it.
In this case, the object is located 15 millimeters in front of the plane mirror. Therefore, the image will be located 15 millimeters behind the mirror.
So, the correct answer is C. 15 millimeters.