# Practice Quiz 2 - 5. When the reflection of an object is...

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Practice Quiz 2 1. The real image of an object is located 45.0 cm away from a concave mirror, which has a focal length of 10.0 cm. How far is the object from the mirror? a. 40.0 cm b. 35.0 cm c. 22.5 cm d . 12.9 cm 2. A woman looking in a makeup mirror sees her face at twice its actual size and right-side up. If she is 28.0 cm from the mirror, what is its focal length? a. 18.6 cm b. 44.0 cm c. 48.3 cm d . 56.0 cm 3. Which of the following best describes the image of a concave mirror when the object is at a distance greater than twice the focal point distance from the mirror? a. virtual, upright and magnification greater than one b . real, inverted and magnification less than one c. virtual, upright and magnification less than one d. real, inverted and magnification greater than one 4. A convex mirror with a focal length of 20 cm forms an image 15 cm behind the surface. If the object height is 1.2 cm what is the image height? a . 0.30 cm b. 0.75 cm c. 0.94 cm d. 3.0 cm
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Unformatted text preview: 5. When the reflection of an object is seen in a convex mirror the image will: a. always be real. b . always be virtual. c. may be either real or virtual. d. will always be enlarged. 5. Sally places an object 6.0 cm from a thin convex lens along its axis. The lens has a focal length of 9.0 cm. What are the respective values of the image distance and magnification? a . − 18 cm and 3.0 b. 18 cm and 3.0 c. 3.0 cm and − 0.50 d. − 18 cm and − 3.0 6. When the reflection of an object is seen in a plane mirror, the distance from the mirror to the image depends on: a. the wavelength of light used for viewing. b . the distance from the object to the mirror. c. the distance of both the observer and the object to the mirror. d. the size of the object. 7. Which of the following effects is the result of the fact that the index of refraction of glass will vary with wavelength? a. spherical aberration b. mirages c . chromatic aberration d. light scattering...
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## This note was uploaded on 05/13/2010 for the course PHYSICS 103 taught by Professor K during the Spring '10 term at California State University Los Angeles .

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