A person $1 m$ in front of a plane mirror seems to be .......... $m$ from his image.

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Solution

Image reflection in the plane mirror:
A person's distance from the mirror is the same as the distance of his image from the mirror.
Therefore, if a person is $1 m$ away from the mirror, then his or her image will be 1m away from the mirror. So the image will be $1 + 1 = 2 m$ away from the person.
The image is at the same distance from the mirror as the object from the mirror is the property of plane mirrors.
A person $1 m$ in front of a plane mirror seems to be $2 m$ from his image.

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A person 1m in front of a plane mirror seems to be .......... m from his image.

A person $1 m$ in front of a plane mirror seems to be .......... $m$ from his image.