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According to the sign conventions carried over from mirrors, what does a negative image distance d_i tell you about a lens image, and what does a negative image height h_i tell you?
ANegative d_i means real, negative h_i means erect
BNegative d_i means virtual, negative h_i means inverted
CNegative d_i means inverted, negative h_i means virtual
DNegative d_i means erect, negative h_i means real
Answer & Solution
Correct answer: B. Negative d_i means virtual, negative h_i means inverted
1. The same sign convention used for mirrors carries over to lenses.
2. A negative image distance, d_i, indicates a virtual image, one that cannot be projected onto a screen.
3. A negative image height, h_i, indicates an inverted image, one flipped relative to the object.
4. Swapping which sign belongs to which property is the trap the wrong options set.
_Source: OpenStax Physics (CC BY 4.0), Ch 16 "Mirrors and Lenses", section 16.3 Lenses_
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