How is magnification related to object distance (proportional, inverse, etc.), and at what object distance is the magnification approximately equal to 1 (object height = image height)?
a) Magnification is inversely proportional to the object distance; approximately 1 when the object distance is infinity.
b) Magnification is directly proportional to the object distance; approximately 1 when the object distance is zero.
c) Magnification is inversely proportional to the object distance; approximately 1 when the object distance is twice the focal length.
d) Magnification is directly proportional to the object distance; approximately 1 when the object distance is equal to the focal length.