



Unit 13 Quiz#2Equations:1. Consider the following diagram. Eight boldfaced 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 objectimage relations as opposed to precise answers based on ray diagrams.
2a. Baldwin Young is using a concave mirror to apply a specialformula miracle lotion to his scalp. The concave mirror has a focal length of 30cm. 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
2b.Determine the factor by which Baldwin's scalp is magnified by the use of such a mirror. PSYW
2c. On the diagram below, draw a 2cm 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.
2d. Completely describe the image in the diagram above (e.g., magnified or reduced? real or virtual? and inverted or upright?)
© Tom Henderson, 19961998 Last updated on
10/13/98.
