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# Final sample - Intro General Physics II Final PHYS 1302(10688 Fall 2005 Lau Name(Optional Special Code Seat Number Instructions 1 Solve 4 of the 6

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Intro General Physics II Final PHYS 1302 (10688) Fall 2005 Lau Name (Optional) Special Code Seat Number Instructions 1. Solve 4 of the 6 problems. 2. Some useful constants and conversion factors: a. h 663 10 34 .J s b. c 300 10 8 .m / s c. 11 0 9 nm m = d. R (Rydberg' s constant) = 1.097 10 m 7- 1 × e. mk g e 9 109 10 31 . f. e 16 10 19 .C g. 13 7 1 0 10 Ci decays / s . h. 6 1 0 19 eV J . 3. List the 4 problems you want to be graded before you turn in your test. ============================================================ Problems to be graded (list only four):

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2 1. An object 2.5 cm long is placed vertically in front of a converging lens as shown in the figure below. The lens has a focal length of 3.0 cm. A scale in centimeters is provided for length measurement. a. Find the position of the image by ray tracing. Use the scale provided for distances. (8) b. Find the size of the image by using the lens formula. (12) c. The size of the image is the same when the object is placed horizontally. True or false? (5) Solution a. The image is located at 26.5 cm , or about 5.5 cm right of the lens by ray tracing. b. The position of image using the lens formula is 1 70 11 1 30 1 1 1 525 .. /( ). cm d f cm d cm cm cm i i +== ⇒= = The magnification is M cm cm == 075 .
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## This note was uploaded on 04/10/2010 for the course PHYS 1102 taught by Professor Lau during the Spring '10 term at Houston Baptist.

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Final sample - Intro General Physics II Final PHYS 1302(10688 Fall 2005 Lau Name(Optional Special Code Seat Number Instructions 1 Solve 4 of the 6

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