Answer: Within f (closer than focal length).
- A Beyond 2f, producing a diminished real image
- B Exactly at 2f, producing a same-size real image
- C Between f and 2f, producing a magnified real image
- D Within f (closer than focal length)
Correct answer: D. Within f (closer than focal length)
Explanation: Convex lens forms virtual, erect, magnified image when object is between the lens and focus (within f).
Concave mirror ray construction: a ray parallel to the axis reflects through F, and a ray through F reflects parallel, locating the inverted real image. Image: Maxmath12, CC0, via Wikimedia Commons.
Concept context
Reflection, refraction, lenses, mirrors, total internal reflection.