Size of image of an object by a mirror having a focal length of 20 cm 'is
observed to be reduced to 1/3rd to its size. At what distance, the object
has been placed from the mirror? What is the nature of the image and
the mirror?
Thinking Process
Solve object distance for both concave mirror and convex mirror using the relation of
magnification and mirror formula.
Answers
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Explanation:
mirror is concave and image's distance is 20 cm
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