Question

A girl is sitting in front of a plane mirror at a dstance of $4m$ from it. What is the distance between the girl and her image?

• A. $4m$
• B. $8m$
• C. $6m$
• D. $12m$

Answer 1

The correct option is B $8m$

For plane mirror
$\text{Distance of object from the mirror = Distance of image from the mirror}$
Distance of girl from the mirror $=4m$
So Distance of girl’s image from the mirror $=4m$
Thus Distance between girl and its image is $=(4+4)m=8m$