alleryMagnification produced by a spherical mirror is:
Am = − v / u
Bm = v / u
Cm = u / v
Dm = − u / v
Answer & Solution
Correct answer: A. m = − v / u
1. Linear magnification m = h' / h = − v / u (sign convention included).
2. Negative m → real, inverted image; positive m → virtual, erect image.
3. |m| > 1 means enlarged; |m| < 1 means diminished.
_Source: syllabus Science Ch 9 §9.2.5 Magnification_
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