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Questions and Answers
Which of the following is a characteristic of lasers?
Which of the following is a characteristic of lasers?
- They use mirrors to amplify light (correct)
- They produce light through chemical reactions
- They emit light through spontaneous emission
- They generate light through nuclear reactions
What is the main difference between lasers and ordinary light sources?
What is the main difference between lasers and ordinary light sources?
- Lasers emit light that is coherent and focused (correct)
- Lasers emit light in all directions
- Lasers produce light of different wavelengths
- Lasers generate light without the use of electricity
Which of the following is a key application of lasers?
Which of the following is a key application of lasers?
- Purifying water
- Cutting and welding metals (correct)
- Heating food
- Generating electricity
Which of the following is an application of lasers?
Which of the following is an application of lasers?
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What is the main advantage of optical fibers over traditional copper wires for communication?
What is the main advantage of optical fibers over traditional copper wires for communication?
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Which of the following is a characteristic of lasers?
Which of the following is a characteristic of lasers?
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