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Electronics and Communication Engineering - Exam Questions Papers - Discussion

Discussion Forum : Exam Questions Papers - Exam Paper 18 (Q.No. 23)
Exam Questions Papers
23.
On which bands, do the optical fibers operate?
  1. Ultra violet band
  2. Ultra high frequency band
  3. Visible light band
  4. Infrared band
Select the correct answer from the codes given below:
1 only
1 and 2 only
1, 2 and only
1, 3 and 4
Answer: Option
Explanation:
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Discussion:
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