alleryMagnification produced by a lens is given by:
Am = u / v
Bm = u * v
Cm = v / u
Dm = u + v
Answer & Solution
Correct answer: C. m = v / u
1. The linear magnification compares image height to object height.
2. From similar-triangle geometry it equals image distance over object distance.
3. With sign convention this is m = v / u.
4. So magnification = v / u.
_Source: Selina Concise Physics ICSE Class 10, Ch 5 'Refraction through a Lens' (aplustopper.com extract)_
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