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The focal length of a concave mirror is ...

The focal length of a concave mirror is `30`cm.Find the position of the object in front of the mirror,so that the image is there times the size of the objects.

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As the object is in front of the mirror it is real and for real object the magnified image formed by concave mirror can be inverted (i.e., read ) or erect (i.e. vitaul ) so there are two possibilities
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