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5 Written questions

5 Matching questions

  1. spectral
  2. inverted image
  3. ray tracing
  4. iris
  5. focal length
  1. a image with opposite orientation from object; see "virtual image"
  2. b reflection off of smooth surfaces
  3. c the tracing of a ray
  4. d muscular diaphragm that controls the size of the pupil
  5. e the distance from a lens to its focus

5 Multiple choice questions

  1. innermost layer that perceives and transmits light to the optic nerve
  2. high to low energy
  3. a solid object that bends light
  4. in the retina, cones can sense color, unlike rods
  5. orange, green, and purple

5 True/False questions

  1. refractionthe bending of rays of light away from a straight line


  2. erect imageimage with same orientation as object; see "real image"


  3. subtractive colorsprimary colors of light are this


  4. diffusemuscular diaphragm that controls the size of the pupil


  5. frequencyhow many waves pass by a fixed point in one second