Introducing Photonics And Lasers
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Now that you have learnt about photonics and lasers, take a quiz to test your understanding.
- 1.
Photonics is the technology of generating and h_____ (10) light.
Explanation
Photonics is the technology of generating and harnessing light. It involves the manipulation and control of light for various applications such as telecommunications, imaging, and sensing. By harnessing light, photonics enables the development of devices and systems that utilize the properties of light to transmit, process, and store information. This field plays a crucial role in modern technology and has numerous practical applications in various industries.Rate this question:
- 2.
In a photonics system, information is e_____ (7) on a beam of light and transmitted across a distance.
Explanation
In a photonics system, information is encoded on a beam of light and transmitted across a distance.Rate this question:
- 3.
Laser shows are the use of photonics in ______.
- A.
Industry
- B.
Internet
- C.
Illumination
- D.
Lightning
Correct Answer
C. IlluminationExplanation
Laser shows involve the use of photonics to create visually stunning displays of light and color. The lasers are carefully controlled and directed to illuminate specific areas, creating dazzling effects and patterns. This use of photonics in laser shows highlights the importance of illumination, as it enhances the visual experience and creates a captivating atmosphere for the audience.Rate this question:
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- 4.
An application of a Class IV laser is ______.
- A.
The removal of tattoo
- B.
The barcode scanner
- C.
The laser printer
- D.
The laser show
Correct Answer
A. The removal of tattooExplanation
The barcode scanner makes use of a Class II laser. The laser printer makes use of a Class I laser. The laser show makes use of a Class III laser.Rate this question:
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- 5.
The diagram below shows a laser show.What precautions must a laser operator take? (There are 2 possible correct answers.)
- A.
Wear appropriate clothing
- B.
Wear appropriate eye protection
- C.
Use a mirror to deflect away all light beams
- D.
Inform others when the laser beam is turned on
Correct Answer(s)
B. Wear appropriate eye protection
D. Inform others when the laser beam is turned onExplanation
A laser operator must wear appropriate eye protection because lasers can emit intense beams of light that can cause damage to the eyes. They should also inform others when the laser beam is turned on to ensure that everyone in the vicinity is aware and can take necessary precautions.Rate this question:
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- 6.
Watch the video on lasik. Which statement is true about lasik surgery?
- A.
During lasik surgery, the shape of the retina is changed.
- B.
Stitching of the eye is needed after lasik surgery.
- C.
The lasik surgery takes about 60 minutes.
- D.
Lasik surgery can treat near-sightedness.
Correct Answer
D. Lasik surgery can treat near-sightedness.Explanation
Lasik surgery is a procedure used to correct vision problems such as near-sightedness, far-sightedness, and astigmatism. It involves reshaping the cornea, not the retina, to improve the way light is focused onto the retina. Stitching of the eye is not required after lasik surgery as it is a minimally invasive procedure. The duration of the surgery is typically around 15 minutes per eye, not 60 minutes. Therefore, the correct statement is that lasik surgery can treat near-sightedness.Rate this question:
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Current Version
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Aug 16, 2024Quiz Edited by
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Aug 06, 2009Quiz Created by
Chanyl2009
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