The distance between the object and the flat mirror was doubled. The distance between the image of the object and the mirror is

The distance between the object and the flat mirror was doubled. The distance between the image of the object and the mirror is
1) remains the same
2) doubled
3) decreased by half
4) quadrupled

In a flat mirror, an imaginary direct image, equal in size to the object, is obtained. The distance between the object and the mirror is equal to the distance between the mirror and the image. If the distance between the object and the mirror is doubled, then the distance between the mirror and the image will also double.
Answer: 2.

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