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प्रश्न
The image of an object formed by a mirror is real, inverted and is of magnification −1. If the image is at a distance of 30 cm from the mirror, where is the object placed? Give reason to justify your answer.
औचित्य
संख्यात्मक
उत्तर
Magnification, `m = (-v)/u`
Given, `m = - 1, v = - 30 cm`
`-1 = (-30)/u`
`u` = 30 cm, an object is placed at a distance of 30 cm from the mirror.
Justification:
To satisfy these conditions, place the object at the focal point of the mirror, resulting in a single image of the same size.
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