Which one of the following statements is correct for a plane mirror?

Which one of the following statements is correct for a plane mirror?

Its focal length is zero.
The size of the image of an object placed in front of the mirror is slightly less than that of the object.
The image is virtual, erect and laterally inverted.
Its focal length is 200 cm.
This question was previously asked in
UPSC NDA-2 – 2018
The correct statement for a plane mirror is C) The image is virtual, erect and laterally inverted.
A plane mirror forms a virtual image, which means it appears to be behind the mirror and cannot be projected onto a screen. This image is always erect (upright) relative to the object. It is also laterally inverted, meaning the left side of the object appears as the right side of the image, and vice versa.
Other properties of the image formed by a plane mirror include:
– The size of the image is equal to the size of the object.
– The distance of the image behind the mirror is equal to the distance of the object in front of the mirror.
– The focal length of a plane mirror is considered to be infinite.
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