lo. The image formed by a
of focal length 20cm is a
object. What is the distance
from the mirror ?
convex
quarter
of the
mirror
of the
object
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Explanation:
The image formed by a convex mirror of focal length 20 cm is a quarter of the object. What is the distance of the object from the mirror?
The mirror formula is 1v+1u=1f where, u,v and f are the distance of the object from the mirror, the distance of the image from the mirror, and, the focal length, respectively.
The distance from the mirror towards the side of the object is taken as negative and the distance to the other side is taken as positive.
The magnification is hiho=−vu, where, hi and ho are the height of the image and the height of the object, respectively.
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