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Chapter 30 pp 2
powerpont questions #2
Question | Answer |
---|---|
The size and location of the object is one of the factors that determines the image formed what are the other two factors? | 1-the distance from the center of the lens2-the focal length of the lens |
Know how to follow the rules of the three principal rays. | A ray parallel to the axispassing through the focal point. A ray through the center. A ray through the focal point. |
In a ray diagram for converging lenses the position of the object in relation to the focal point determines what? | the size and the type of the image |
Make sure you study the table in section 30.4 of your power point notes. | |
The image and the object are always on opposite sides of the lenses when what kind of image is formed? | a real image |
The image and the object are always on the same side of the lens when what kind of image is formed? | a virtual image |
When and where were the eyeglasses invented? | Italy, late 1200's |
What is it called when the camera uses compound lenses to minimize destortions? | aberrations |
In a camera what is the opening called? | aperture |
What are the two main types of telescopes | astronomical and terrestrial |
Which type of telescope uses two lenses and has an image that is inverted? | astronomical |
Which type of telescope uses three lenses and has an image that is upright? | terrestrial |
What type of optical instrument uses an eyepiece and an objective lens? | a compound microscope |
What type of optical instrument uses a combination of mirrors and lenses to produce a real, enlarged image? | a projector |