Introducing photonics and lasers

6 Questions I 9 Attempts I Created By chanyl2009 1386 days ago

Now that you have learnt about photonics and lasers, take a quiz to test your understanding.

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Question Excerpt From Introducing photonics and lasers

Q.1)	Photonics is the technology of generating and h_____ (10) light.

Q.2)	In a photonics system, information is e_____ (7) on a beam of light and transmitted across a distance.

Q.3)	Laser shows are the use of photonics in ______.

industry

Internet

C.	illumination

lightning

Q.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

Q.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

Q.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.

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