An object is placed in front of a convex mirror, and the size of the image...
An object is placed in front of a convex mirror, and the size of the image is three-fourth that of the object. What is the ratio (do/f) of the object distance to the focal length of the mirror?
Homework Answers
magnification, m = hi / ho = -(di/do)
hi = image height, ho =object height , di = image distance, do = object distance
- di/ do = 3/4
di = - 0.75do
using mirror equation,
for convex mirro, f is negative.
1/(-f) = 1/do + 1/di = 1/do + (1/-0.75do)
1/f = 0.333/d0
do/f = 0.333 Or 1/3
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