What would be the distance between an obect placed 20 cmaway in front of a plane mirror and its image ?
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An object is placed 20 cm in front of a plane mirror, then the image will form 20 cm behind the mirror because the image formed by a plane mirror is at the same distance behind it as it is between the object and the mirror. ... Also, the distance between mirror and image = 18 cm, which is 2 cm less than the initial case.
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