The distance between the object and its image in a plane mirror is 10m. If the object is brought 2m closer to the mirror then the image distance from the mirror will be
A
6m
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B
10m
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C
8m
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D
3m
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Solution
The correct option is D3m For plane mirror Distance of object from the mirror = Distance of image from the mirror
Distance of between the object and image is twice the Distance of the object from the mirror.
Initially distance of object from mirror =102=5m
When the object moves 2m closer to the mirror, Distance of object from the mirror =3m Distance of object from the mirror = Distance of image from the mirror
So distance of image from mirror =3