alleryAn object placed at 2F from a convex lens forms an image:
AAt infinity across all cases
BAt F on the same side in general usage
CBetween the lens and F
DAt 2F on the other side, real, inverted, same size
Answer & Solution
Correct answer: D. At 2F on the other side, real, inverted, same size
1. Use the lens formula 1/v - 1/u = 1/f with u = -2f.
2. Solving gives v = +2f.
3. The image is real, inverted and the same size as the object.
4. So the image forms at 2F on the other side.
_Source: Selina Concise Physics ICSE Class 10, Ch 5 'Refraction through a Lens' (aplustopper.com extract)_
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