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Questions and Answers
Which type of laser is commonly used in supermarkets to read bar codes?
Which type of laser is commonly used in supermarkets to read bar codes?
- Yellow laser
- Red laser (correct)
- Green laser
- Blue laser
Which field of study utilizes He-Ne lasers to produce 3D images of objects?
Which field of study utilizes He-Ne lasers to produce 3D images of objects?
- Holography (correct)
- Physics
- Biology
- Chemistry
Surveyors take advantage of which characteristic of the helium-neon laser to take precise measurements over long distances?
Surveyors take advantage of which characteristic of the helium-neon laser to take precise measurements over long distances?
- Low beam quality
- Good beam quality (correct)
- Short wavelength
- High power output
Which type of laser is found to emit light that is more directional and more monochromatic?
Which type of laser is found to emit light that is more directional and more monochromatic?
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Which effects are present in solid-state lasers that can affect their performance?
Which effects are present in solid-state lasers that can affect their performance?
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Which type of laser is capable of operating continuously without the need for cooling?
Which type of laser is capable of operating continuously without the need for cooling?
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