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Electronics Technician Volume 09-Electro Optics

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Assignment Questions

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122. How much does the Nite-Eye pocketscope weigh?

1. 10 ounces2. 15 ounces3. 2.5 pounds4. 4 pounds

1-23. What is the basis for the improvednight observation and aimed fireof weapons provided by crew-servedand individual-served sights?

1. Available light from the nightsky

2. Greater magnification3. Special mounting4. Attached illumination devices

1-24. Instructions for donning theAN/PVS-5C NVG are permanentlymounted on the side of the unit.

1. True2. False

1-25. The eyes of some animals that huntat night and sleep in the daytimehave retinas composed almostentirely of cones.

1. True2. False

1-26. Which of the following militaryapplications is not met by lasersused in the Navy today?

1. Training aids2. Communications3. Target destruction4. Landing systems

127. Lasers operate on which of thefollowing principles?

1. Stimulated emission2. Spontaneous decay3. Stimulated decay4. Random direction

128. In what state do electrons in alasing material reside?

1. Steady2. Excited3. Unstable4. Both 2 and 3 above

1-29. During lasing, a burst of lightwill be transmitted along which ofthe following paths?

1. Through the optical axis2. Through the 100% reflecting

mirror3. Through the optical cavity4. Through the 99% reflecting

mirror

1-30. Which of the following statementsis/are true regarding differencesin light from a conventionalsource and light from a laser?

1. The intensity of light from aconventional source decreasesrapidly with distance

2. The beam intensity of a laserremains almost the same as atthe source

3. A laser requires much lowerpower

4. All of the above

1-31. Which of the following surfaceswill not significantly change thedivergence of the striking laserbeam?

1. Curved specular2. Curved diffuse3. Flat specular4. Flat diffuse

1-32. For which of the followingsurfaces is the amount ofdivergence determined by the sizeof the beam?

1. Curved specular2. Curved diffuse3. Flat specular4. Flat diffuse

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ignment Questions http://www.tpub.com/content/et/82419/css/82419_9.htm

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