A person is looking at the image of his face in a mirror by holding it close to his face. The image formed is virtual. When he moves the mirror away from his face, the image is inverted. What type of mirror is he using?

Plane mirror

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Concave mirror

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Convex mirror

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Combination of mirror and lenses

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Solution

The correct option is A Concave mirror
For a concave mirror, if the object distance is less than the focal length, then a virtual and erect image is formed.

On increasing the object distance beyond the focal length, image formed is real and inverted.
Only a concave mirror can form both virtual and erect image and real inverted image.

For convex mirror, image formed is always virtual.
Hence the mirror is concave.

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