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Homework03 - tory How far from the page should you hold the...

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Physics 165/164 Homework Assignment #3 Due, Friday 22 February 2008 at the beginning of class. Read sections 1 and 2 of Handout #3. Solve Problems: 1. An object placed 8.0 cm in front of a concave spherical mirror produces a virtual image 10.0 cm behind the mirror. If the object is moved back until it is 25.0 cm from the mirror, where is the image now located? Is it real or virtual? 2. You’re projecting slides onto a wall 2.5 m away from the projector. The projector has a single converging lens with a focal length of 10.0 cm. How far should the slides be from the lens to form a sharp image on the wall? If the slides are 35 mm in height, what is the size of the image? Is the image upright or inverted? 3. You’re using a magnifying glass with a 30.0 cm focal length to read a telephone direc-
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Unformatted text preview: tory. How far from the page should you hold the lens in order to see the image right side up and three times larger than the print on the page? 4. An object is placed two focal lengths from a diverging lens. Find the location and magni±cation of the image. Is the image real or virtual? Support your calculation with a clear sketch showing object, image, and at least two light rays. ( Hint: Be careful with the signs of the quantities you’re working with!) Dates to remember: Exam #2, 8:30 am, Wednesday, 19 March 2008. “If we knew what we were doing, it wouldn’t be called research, would it?” Albert Einstein....
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