Practice Test No. 3

Practice Test No. 3 - Physics 142 000 Spring 2008 Practice...

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Physics 142 000 Practice Test No. 3 Name Spring 2008 ID There is no partial credit on multiple choice questions. Please circle one number (1, 2, 3…) for each question to indicate your response. There will be partial credit on free response questions. Your work as well as your result will be evaluated. Your answers must be given to the appropriate number of significant figures. All questions have the same value. You must have your own calculator; you may not share a calculator with anyone. You are allowed three 4 × 6 inch index cards with your own hand-written notes on both sides. I pledge, by signing below, that I will faithfully abide by the provisions and spirit of the Emory College Honor Code in my completion of this Test. Signature Date 1. A woman holds a small plane mirror 30 cm behind her head while standing in front of a full length plane mirror which is 1.2 m from the back of her head. Where is the image of the back of her head? 1. 0.9 m behind the full length mirror 2. 1.8 m behind the full length mirror 3. 1.5 m behind the full length mirror 4. 1.2 m behind the full length mirror 5. 2.4 m behind the full length mirror 2. The center of curvature (C) of a spherical mirror is the center of the sphere of which the mirror is a small part. If an object is placed in front of a concave mirror at the center of curvature, where is the image? 1. at C 2. at a distance C behind the mirror 3. at F, the focal point 4. between F and C 5. between F and the mirror 3. You are standing beside a pond and wish to hit a fish in the water with the beam of your laser pointer. If you hold the laser pointer right beside your eye, how should you aim it? 1. above the fish
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Practice Test No. 3 - Physics 142 000 Spring 2008 Practice...

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