Lab 6 Mirrors and - Physics 8B Lab 6 – Mirrors& Lenses rev 4.0 Lab 6 – Mirrors& Lenses Part I Parallax& Plane Mirrors Have a fellow

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Unformatted text preview: Physics 8B Lab 6 – Mirrors & Lenses rev 4.0 Lab 6 – Mirrors & Lenses Part I: Parallax & Plane Mirrors Have a fellow student hold two pencils, one behind the other, approximately 1m in front of you. Have them move one pencil approximately 15cm closer to you. Close one eye, and move your head so that one pencil appears to be directly in front of the other. Now move your head from side to side. a) If you move your head to the right, which pencil appears to be on the right: the one closer to you or farther from you? b) If instead you move your head to the left, which pencil appears to be on the left: the one closer to you or farther from you? c) Have your fellow student place the two pencils one behind the other so that they are touching. How does this change affect what you observe when you move your head from side to side? d) You observed that there is an apparent change in the relative location of the two pencils when you move your head from side to side. This effect is said to be due to parallax. Draw diagrams to show how you can use parallax to determine which of the two items is closer to you. (Diagram should be an overhead view looking down at the two items and your head when they are lined up and when your head moves off to the side.) Physics 8B Lab 6 – Mirrors & Lenses rev 4.0 e) How must the two items be located relative to one another, if you observe no effect of parallax when you move your head from side to side? Use two markers (metal hook on a circular base) and the plane mirror. Place a sheet of paper on the table. Hold the mirror in the middle of the paper, perpendicular to the tabletop. Place one marker on the paper approximately 10cm in front of the mirror. We will call this the ‘object marker’. Place your head at table level and look into the mirror so that you can see the image of the object marker. f) Which side of the mirror does the image appear to be located? g) Does the image stay in the same location when you move your head to different positions? Look directly from the object to the mirror (i.e. along the perpendicular axis)....
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This note was uploaded on 09/28/2009 for the course PHYSICS 8B taught by Professor Shapiro during the Spring '07 term at University of California, Berkeley.

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Lab 6 Mirrors and - Physics 8B Lab 6 – Mirrors& Lenses rev 4.0 Lab 6 – Mirrors& Lenses Part I Parallax& Plane Mirrors Have a fellow

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