- Define and draw a diagram of the following:
- Focal length
- Positive lens aberration
- Negative lens
- Two kinds of distortion
- Lateral color
- Achromatic lens
- Refraction of light
- Explain how light behaves when it strikes or traverses water, oil, feldspar, and a mirror.
- Name and draw diagrams of three kinds of positive lenses and three kinds of negative lenses.
- What should be the minimum distance of light source from the lenses when testing for focal length?
- Find the focal length of at least four lenses, one being a negative lens.
- Explain by diagram why an image from a positive lens makes an image reversed and inverted.
- Show with diagrams how a prism works. State the angles at which the colors appear and disappear.
- Show and demonstrate what happens when light strikes one-way glass.
- Construct one optical instrument using mirrors or lenses, such as a periscope, a slide or opaque projector, or a simple telescope.
- Explain what is meant by the term 6 x 35 and 7 x 50 as applied to binoculars.
- Define the term “f/stop” as used in connection with cameras. What does it mean when a lens is fast or slow? Is an f 18.5 lens faster or slower than an f 18 lens?
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