Three identical objects are placed on the principal axis of the same concave mirror at distances 0.5f, 1.5f, and 3f from the mirror, where f is the focal length. Rank the magnitudes of the image heights ∣hi∣ produced by the mirror from greatest to least.
a) 1.5f>0.5f>3f
b) 3f>1.5f>0.5f
c) 0.5f=1.5f>3f
d) 0.5f>1.5f>3f