Consider the following statements about copper vapour lasers : Though originally invented in 1996, they are now being developed furthre for a wide veriety of applications because 1. they can produce short and long wave length radiations 2. they can be foc

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(IES/B)
Consider the following statements about copper vapour lasers : Though originally invented in 1996, they are now being developed furthre for a wide veriety of applications because
1. they can produce short and long wave length radiations
2. they can be focused on very small areas.
3. of their very high pulse repetition frequency and narrow pulse-widths.
Of these statements :
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question_subject: 

General Knowledge

question_exam: 

IES

stats: 

0,1,13,6,3,4,1

keywords: 

{'copper vapour lasers': [1, 0, 0, 0], 'long wave length radiations': [1, 0, 0, 0], 'high pulse repetition frequency': [1, 0, 0, 0], 'narrow pulse': [1, 0, 0, 0]}