Physics_52_Proficiency_Test_1s

Physics_52_Proficiency_Test_1s - showing image formation of...

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Physics 52 Proficiency Test 1(Sample) (Time: 15 minutes) 25 points By Todd Sauke Name ________________________ Section # ________ Consider a compound microscope, constructed from two lenses, the first (eyepiece) of focal length f e = 3 cm and the second (objective) of focal length f o = 1 cm. The lenses are supported by a tube and fixed to have a separation of 10 cm as shown below. An object is to be placed to the left of the objective lens and viewed by eye to the right of the eyepiece. The eyepiece acts as a simple magnifier for the image of the object to be formed just to the left of the eyepiece (inside the tube). For comfortable viewing, the image should be one focal length to the left of the eyepiece, so that the image formed by the eyepiece is at infinity (appropriate for a relaxed eye). Your jobs are to: (1) determine where the object should be placed (at what distance to the left of the objective lens); (2) sketch the ray diagram
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Unformatted text preview: showing image formation of the object inside the tube; (3) identify the nature, orientation, and magnification of the image inside the tube; (4) determine the overall angular magnification of the final image, as compared to the original object if viewed at a typical near point of 25 cm. (1) How far to the left of the objective lens should the object be placed? __________cm (2) Sketch the ray diagram, using several principle rays, showing the image in the tube. (3) Is the image in the tube REAL or VIRTUAL ? (circle one) Is the image in the tube ERECT or INVERTED ? (circle one) What is the magnification of the image in the tube? _______________ (4) What is the overall angular magnification of the final image, as compared to the original object if viewed at a typical near point of 25 cm? ____________________...
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This note was uploaded on 09/08/2010 for the course PHYS 52 at San Jose State University .

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