Physics for Scientists and Engineers 8ed - ch36 - end of chapter questions

Physics for Scientists and Engineers 8ed - ch36 - end of chapter questions

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Questions W denotes answer available in Student SolutionsManual/Study Guide; O denotes objective question 1. Consider a concave spherical mirror with a real object. Is the image always inverted? Is the image always real? Give conditions for your answers. 2. Repeat Question 1 for a convex spherical mirror. 3. O (i) What is the focal length of a plane mirror? (a) 0 (b) 1 (c) - 1 (d) (e) equal to the mirror height (f) Neither the focal length nor its reciprocal can be defined. (ii) What magnification does a plane mirror produce? (a) 0 (b) 1 (c) - 1 (d) (e) Neither the magnification nor its reciprocal can be defined. 4. Do the equations 1/ p + 1/ q = 1/ f and M = – q / p apply to the image formed by a flat mirror? Explain your answer. 5. O Lulu looks at her image in a makeup mirror. It is enlarged when she is close to the mirror. As she backs away, the image becomes larger, then impossible to identify when she is 30 cm from the mirror, then upside down when she is beyond 30 cm, and finally small, clear, and upside down when she is much farther from the mirror. (i) Is the mirror (a) convex, (b) plane, or (c) concave? (ii) What is the magnitude of its focal length? (a) 0 (b) 15 cm (c) 30 cm (d) 60 cm (e) 6. Consider a spherical concave mirror with the object located to the left of the mirror beyond the focal point. Using ray diagrams, show that the image moves to the left as the object approaches the focal point. 7. O (i) Consider the mirror in Figure 36.11. What are the signs of the following? (a) the object distance (b) the image distance (c) the mirror radius (d) the focal length (e) the object height (f) the image height (g) the magnification (ii) Consider the objective lens in Active Figure 36.41a. What are the signs of the following? (a) the object distance (b) the image distance (c) the focal length (d) the object height (e) the image height (f) the magnification (iii) Answer the same questions (a) through (f) as in part (ii) for the eyepiece in Active Figure 36.41a. 8. O A person spearfishing from a boat sees a stationary fish a few meters away in a direction about 30° below the horizontal. To spear the fish, should the person (a) aim above where he sees the fish, (b) aim precisely at the fish, or (c) aim below the fish? Assume the dense spear does not change direction when it enters the water. 9. O A single converging lens can be used to constitute a scale model of each of the following devices in use simply by changing the distance from the lens to a candle representing the object. Rank the cases according to the distance from the object to the lens from the largest to the smallest. (a) a movie projector (b) Batman’s signal, used to project an image on clouds high above Gotham City (c) a magnifying glass (d) a burning glass, used to make a sharp image of the Sun on tinder (e) an astronomical refracting telescope, used to make a sharp image of stars on an electronic detector (f) a searchlight, used to produce a beam of parallel rays from a point source. (g) a camera
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This note was uploaded on 05/22/2010 for the course PHYS 2326 taught by Professor Staff during the Summer '08 term at HCCS.

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Physics for Scientists and Engineers 8ed - ch36 - end of chapter questions

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