Assignment 10 answers - Assignment 11 Due: 11:59pm on...

Assignment 10 answers
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Assignment 11 Due: 11:59pm on Tuesday, July 12, 2011 Note: To understand how points are awarded, read your instructor's Grading Policy . [Switch to Standard Assignment View ] ± Understanding Multiple Optics Learning Goal: To become familiar with using the image of one instrument as the object of the next and tracing rays through a system of multiple instruments. Multiple optics refers to any system of more than one optical instrument through which light passes. Most devices related to optics, such as cameras, microscopes, and telescopes, contain multiple optics systems. In multiple optics, the image of one optical instrument becomes the object of the next one. Thus, in multiple optics problems, you need to find the image created by the first optical instrument that the rays encounter. Then, you will use that image as the object of the next optical instrument, repeating this pattern until you have followed the rays all the way through the system. It is very important to be alert to the geometry and to signs when you find the object distance for one instrument from the location of the previous instrument's image. Sometimes, the image is formed on the virtual side of the instrument, leading to a virtual object. This may sound strange, but in practice, its effect on your calculations is simply to make the object distance negative instead of positive. Several optical instruments are placed along the x axis, with their axes aligned along the x axis. A plane mirror is located at . A converging lens with focal length 5.00 is located at . An object is placed at . In order to find the location of the final image of the object formed by this system, you will need to trace the rays through the system, instrument by instrument. You are strongly advised to draw a picture with the x axis and the location of the lens, mirror, and object marked. Then, as you proceed through the problem, you can mark where each image is located. Part A First, find the location of the image created by the lens by itself (as if no other instruments were present). Hint A.1 The thin lens equation Hint not displayed Express your answer in meters, to three significant figures, or as a fraction. ANSWER: = 2.50 Correct Part B Next, find the location of the image created by the plane mirror (after the light has passed through the lens). Hint B.1 The focal length of a plane mirror Hint not displayed Hint B.2 Find the object distance Hint not displayed [ Print ]
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Express your answer in meters, to three significant figures, or as a fraction. ANSWER: = -2.50 Correct Proceed with caution! The light reflects off of the mirror and back through the lens a second time! Part C What is the location of the final image, as seen by an observer looking toward the mirror, through the lens? Keep in mind that the light must pass back through the lens, and thus you must do one more calculation
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