22. An object placed 19.0 cm from a concave mirror produces a real image 12.7 cm from the mirror. If the object is now moved to a new position 27.0 cm from the mirror, where is the new image located as measured from the mirror? a. 7.61 cm b. 10.6 cm c. 5.94 cm d. 18.0 cm e. 20.7 cm ANSWER: b
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0 cm from the mirror. The mirror equation is 1/f = 1/v + 1/u, where f is the focal length, v is the image distance, and u is the object distance. Given that the object distance (u) is -19.0 cm (negative because it is on the same side of the mirror as the light Show more…
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A concave mirror (R 56.0 cm) is used to project a transparent slide onto a wall. The slide is located at a distance of 31.0 cm from the mirror, and a small flashlight shines light through the slide and onto the mirror. The setup is similar to that in Figure 25.18a. (a) How far from the wall should the mirror be located? (b) The height of the object on the slide is 0.95 cm. What is the height of the image? (c) How should the slide be oriented, so that the picture on the wall looks normal?
Refer to Interactive Solution $25.21$ at www.wiley.com/college/ cutnell for help with problems like this one. A concave mirror $(R=56.0 \mathrm{~cm})$ is used to project a transparent slide onto a wall. The slide is located at a distance of $31.0 \mathrm{~cm}$ from the mirror, and a small flashlight shines light through the slide and onto the mirror. The setup is similar to that in Figure $25.18 a .$ (a) How far from the wall should the mirror be located? (b) The height of the object on the slide is $0.95 \mathrm{~cm} .$ What is the height of the image? (c) How should the slide be oriented, so that the picture on the wall looks normal?
Refer to Interactive Solution $\underline{25.19}$ at for help with problems like this one. A concave mirror $(R=56.0 \mathrm{~cm})$ is used to project a transparent slide onto a wall. The slide is located at a distance of $31.0 \mathrm{~cm}$ from the mirror, and a small flashlight shines light through the slide and onto the mirror. The setup is similar to that in Figure $25-19 a$. (a) How far from the wall should the mirror be located? (b) The height of the object on the slide is $0.95 \mathrm{~cm}$. What is the height of the image? (c) How should the slide be oriented, so that the picture on the wall looks normal?
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