Single correct option
An object is placed at a distance of 2f from a convex lens of focal length f. The image formed is
- A. real, inverted and of the same size as the object
- B. virtual, erect and magnified
- C. real, inverted and magnified
- D. virtual, erect and diminished
Show answer and solution
Answer: (A) real, inverted and of the same size as the object
Using 1/v - 1/u = 1/f with u = -2f gives v = +2f, so the image forms at 2f on the other side. Magnification is v/u = -1, meaning the image is real, inverted and equal in size. A magnified real image would need the object between f and 2f instead.
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