A girl stands 2.5 m infront of a plane mirror. If she steps 0.5 m farther away from the mirror, how far will she be from her image?
To find out how far the girl will be from her image when she steps 0.5 m farther away from the mirror, we need to understand the properties of plane mirrors.
In front of a plane mirror, the distance between the mirror and the object is equal to the distance between the mirror and the image. This is known as the "equal distance rule" for plane mirrors.
Given that the girl stands 2.5 m in front of the plane mirror, the distance between the girl and her image is 2.5 m.
When the girl steps 0.5 m farther away from the mirror, her new distance from the mirror will be 2.5 m + 0.5 m = 3 m.
Since the equal distance rule states that the distance between the mirror and the image is equal to the distance between the mirror and the object, the distance between the girl and her image will also be 3 m.
Therefore, when the girl steps 0.5 m farther away from the mirror, she will be 3 m from her image.