Answer: Wavelength is decreased or NA increased.
- A Wavelength of light is increased
- B Numerical aperture decreases
- C Wavelength is decreased or NA increased
- D Magnification is reduced
Correct answer: C. Wavelength is decreased or NA increased
Explanation: Resolving power = 2 x NA / lambda. Increases by using shorter wavelength light or larger numerical aperture.
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.