What is the purpose of Laser here?
A) For treatment of eyes.
B) It is used as a technology for making diamond
C) It is a technique to manufacture gold.
D) A device that is used for metal cutting.
Correct Answer: D
Solution :
Laser means Light Amplification by Stimulated Emission OF Radiation. It is used for diverse purposes like CD writing/ reading, communications, land mapping and here it is used to cut metals.
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