alleryImage distance v = +30 cm and object distance u = -10 cm. Magnification is:
A+3
B+0.33
C-3
D-0.33
Answer & Solution
Correct answer: C. -3
1. m = v / u = 30 / (-10).
2. m = -3.
3. The negative sign indicates an inverted image.
4. The magnitude 3 means it is three times the object size.
_Source: Selina Concise Physics ICSE Class 10, Ch 5 'Refraction through a Lens' (aplustopper.com extract)_
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