PhysicsLAB Worksheet
Converging Lens Vocabulary

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Directions: Research the resource lesson on converging lenses for these answers. Many of them can be discovered by watching the outcome of each ray animation. This worksheet does not present "correct answers," it is a single submission. It will be graded out of 18 - allowing you two "free errors or omissions or extra credit."

1. A ____ lens (shape) is thicker in the center than on the edges. 

2. When used individually, a ____ lens usually forms real images. 

3. When formed by a single lens, a ____ image is always inverted. 

4. When formed by a single lens, a ____ image is always upright. 

5. Virtual images formed by converging lenses are ____ compared to the object. [examine case 6]
 
6. A ____ image can be projected onto a screen. 

7. A ____ image is said to be "trapped" in the lens. 

8. When light passes through a lens, its frequency ____.
 
9. A ray that starts from the top of an object and runs parallel to the axis of the lens, would then pass through the ____.
 
10. A ray that starts from the top of an object and passes through the ____ would leave the lens running parallel to its axis.
 
11. A ray that starts from the top of an object and passes through the ____ would leave the lens totally straight.
 
12. When used in air, which set of terms are synonymous?
 
13. For a converging lens, its ____ is located on the same side of the lens as the object.
 
14. After passing through a lens, rays of light traveling parallel to a lens' axis are refracted to the lens' ____.
 
15. Real images are formed by ____ rays of light that have passed through a lens.
 
16. Virtual images are formed by ____ rays of light that have passed through a lens.
 
17. Images which are closer to the lens than the object are ____ than the size of the object.
 
18. ____ images are located on the same side of the lens as the object - that is, by looking in one direction, the observer can see both the image and the object.
 
19. ____ images are located on the opposite side of the lens as the object - that is, when an observer is look in one direction to see the image, the object is "behind his back" in the opposite direction.  He cannot view both the image and the object in the same direction.
 
20. When an object is located greater than two focal lengths in front of a converging lens, the image it produces will be ____.
 



 
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