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Unit 13 Quiz#2

Equations:

1. Consider the following diagram. Eight bold-faced objects are shown positioned a given distance from the concave mirror. Twenty different images are shown. Each object (except 1) has a corresponding image in the diagram. Obviously some of the images do not correspond to an object. Match the eight objects to the corresponding image by filling in the table below. Base your answer on a qualitative understanding of object-image relations as opposed to precise answers based on ray diagrams.

Object

Image

1

________

2

________

3

________

4

________

5

________

6

________

7

________

8

________


Useful Web Links

Image Characteristics for Concave Mirrors (9 seconds)

 

2a. Baldwin Young is using a concave mirror to apply a special-formula miracle lotion to his scalp. The concave mirror has a focal length of 30-cm. If Baldwin's scalp is located a distance of 45 cm form the mirror where will the image of his scalp be? Solve using the mirror equation. PSYW


Useful Web Links

The Mirror Equation - Concave Mirrors (6 seconds)

 

2b.Determine the factor by which Baldwin's scalp is magnified by the use of such a mirror. PSYW


Useful Web Links

The Mirror Equation and Magnification Ratio (6 seconds)

 

2c. On the diagram below, draw a 2-cm tall (approximately) arrow at the appropriate distance from the mirror to represent the object (Baldwin's scalp) - refer to numerical values given in #2a above. Construct a ray diagram in order to determine the image location. Be neat and accurate. Place arrows on all light rays.


Useful Web Links

The Anatomy of a Curved Mirror (6 seconds)

Ray Diagrams - Concave Mirrors (14 seconds)

 

2d. Completely describe the image in the diagram above (e.g., magnified or reduced? real or virtual? and inverted or upright?)

 


Useful Web Links

Image Characteristics for Concave Mirrors (9 seconds)

 

 

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Glenbrook South High School.

Last updated on 10/13/98.