Answer: Chromatic aberration.
- A Spherical aberration
- B Coma
- C Chromatic aberration
- D Astigmatism
Correct answer: C. Chromatic aberration
Explanation: Chromatic aberration: lens refracts different wavelengths differently (due to dispersion), causing color fringing.
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.