1.How do you describe the image formed by a plane mirror? A. The image is virtual, behind the mirror, and enlarged B. The image is virtual, behind the mirror, and of the same size as the object C. The image is real, at the surface of the mirror and enlarged D. The image is real, behind the mirror, and of the same size as the object 2. What is the focal length of a spherical mirror with a radius of curvature of 30 cm is A. 10 cm B. 15 cm C. 20 cm D. 30 cm 3. Where should an object be placed in a concave mirror to form a real image larger than the object? A. at a distance equal to the radius of curvature B. at a distance less than the focal length C. between focus and center of curvature D. at a distance greater than the radius of curvature

1.How do you describe the image formed by a plane mirror? A. The image is virtual, behind the mirror, and enlarged B. The image is virtual, behind the mirror, and of the same size as the object C. The image is real, at the surface of the mirror and enlarged D. The image is real, behind the mirror, and of the same size as the object 2. What is the focal length of a spherical mirror with a radius of curvature of 30 cm is A. 10 cm B. 15 cm C. 20 cm D. 30 cm 3. Where should an object be placed in a concave mirror to form a real image larger than the object? A. at a distance equal to the radius of curvature B. at a distance less than the focal length C. between focus and center of curvature D. at a distance greater than the radius of curvature

Principles of Physics: A Calculus-Based Text

5th Edition

ISBN:9781133104261

Author:Raymond A. Serway, John W. Jewett

Publisher:Raymond A. Serway, John W. Jewett

Chapter25: Reflection And Refraction Of Light

Section: Chapter Questions

Problem 52P

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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 30.0 cm from the mirror, then upside down when she is beyond 30.0 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) Is the magnitude of its focal length (a) 0, (b) 15.0 cm, (c) 30.0 cm, (d) 60.0 cm, or (e) ?
Lulu looks at her image in a makeup mirror. lt is enlarged when she is close to the mirror. As she backs away, the image becomes larger, then impossible to identify when she is 30.0 cm from the mirror, then upside down when she is beyond 30.0 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) Is the magnitude of its focal length (a) 0, (b) 15.0 cm, (c) 30.0 cm, (d) 60.0 cm, or (e) ?
You are looking for a mirror so that you can see a four- fold magnified virtual image of an object when the object is placed 5 cm from the vertex of the mirror. What kind of mirror you will need? What should be the radius of curvature of the mirror?
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What are the differences between real and virtual images? How can you tell (by looking) whether an image formed by a single lens or mirror is real or virtual?
(a) A concave spherical mirror forms an inverted image 4.00 times larger than the object. Assuming the distance between object and image is 0.600 m, find the focal length of the minor, (b) What If? Suppose the mirror is convex. The distance between the image and the object is the same as in part (a), but the image is 0.500 the size of the object. Determine the focal length of the mirror.
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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.
An object 10.0 cm tall is placed at the zero mark of a meter-stick. A spherical mirror located at some point on the meter-stick creates an image of the object that is upright, 4.00 cm tall, and located at the 42.0-cm mark of the meterstick. (a) Is the mirror convex or concave? (b) Where is the mirror? (c) What is the mirror s focal length?
A certain Christmas tree ornament is a silver sphere having a diameter of 8.50 cm. (a) If the size of an image created by reflection in the ornament is three-fourths the reflected objects actual size, determine the objects location. (b) Use a principal-ray diagram to determine whether the image is upright or inverted.