A person looks into the mirror by placing it close to his face. The image of his face was erect, laterally inverted and of the same size. Then, the mirror must be :
A
plane
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B
concave
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C
convex
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D
plane or concave
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Solution
The correct option is A plane The nature of the image formed by a plane mirror is virtual, erect, of the same size, and also laterally inverted.
The image given the question satisfies all these properties. Therefore, the mirror is a plane mirror.