15) How far would an object need to be placed
from a mirror of focal length 10cm if it is
to produce an image which is 20.0cm
BEHIND the mirror ?
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Explanation:
Object Distance and Image Distance
That is the image is the same distance behind the mirror as the object is in front of the mirror. If you stand a distance of 2 meters from a plane mirror, you must focus at a location 2 meters behind the mirror in order to view your image.
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