Answer: Full image forms with half intensity.
- A Only lower half of image forms
- B Image disappears
- C Full image forms with half intensity
- D Image inverts
Correct answer: C. Full image forms with half intensity
Explanation: Removing half the lens: full image still forms (every ray that passes through ANY part of the lens contributes to the image), but intensity is halved.
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.