Final answer:
In physics, the angle of incidence equals the angle of reflection when shining a light source onto a mirror, allowing two people standing in front of the mirror to see each other. The separation distance between their images in the mirror is equal to their actual separation distance of 5.0 meters.
Explanation:
To see the other person in the mirror, the angle of incidence should be the same as the angle of reflection.
When two people stand in front of a mirror, if Person 1 shines the flashlight at the mirror, the angle at which the light hits the mirror should equal the angle at which it reaches Person 2 for them to see each other.
The separation distance between their images in the mirror will be the same as their actual separation distance, which is 5.0 meters in this case.
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