An object is placed a distance y0 = ?2f in front of a concave mirror of focal length f that is located at y = 0 . An identical object is placed a distance y'0 = ?2f in front of a convex mirror of focal length ?f that is located at y' = 0 . The difference between the two image positions, yi ? y'i, is
a. f /2
b. f.
c. 4f /3.
d. 2f.
e. 8f /3.
e
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