PhysicsLAB CP Workbook
Lenses

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Refer to the following information for the next six questions.

Rays of light bend as shown below when passing through several glass blocks.
 
 
1. Discuss with your partner how light rays bend when they pass through the arrangement of glass blocks shown below.
 
 

2. Sketch for your partner how light rays bend when they pass through the lens shown below. Is the lens a converging or a diverging lens? What is your evidence?
 
 

3. Discuss with your partner how light rays bend when they pass through the arrangement of glass blocks shown below.
 
 

4. Sketch for your partner how light rays bend when they pass through the lens shown below. Is the lens a converging or a diverging lens? What is your evidence?
 
 

5a. Which type of lens is used to correct farsightedness?
 
5b. Which type of lens is used to correct nearsightedness?
 
Refer to the following information for the next five questions.

Construct rays to find the location and relative size of the arrow's image for each of the lenses below. Rays that pass through the middle of a lens continue undeviated. In a converging lens, rays from the tip of the arrow that are parallel to the optic axis extend through the far focal point after going through the lens. Rays that go through the near focal point go parallel to the axis after going through the lens. In a diverging lens, rays parallel to the axis diverge and appear to originate from the near focal point after passing though the lens. Have fun!

In each case, describe what type of image is formed (real or virtual), whether it is upright or inverted, enlarged or reduced, and where it is located.

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