The word focal point
MOST NEARLY means:
  1. Of or relating to the invisible part of the electromagnetic spectrum.
  2. Point on the optical axis of a mirror or lens where the rays traveling parallel to the optical axis pass through.
  3. The amount of waves per second.
  4. Narrow beam of light traveling in a straight line.
  5. States when a wave is reflected, the angle of incidence is equal to the angle of reflection.
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