Electronics and Communication Engineering - Microwave Communication - Discussion

23. 

As compared to LED, LASER has

  1. higher emission efficiency
  2. no tuning arrangement
  3. narrow spectral width
  4. provision for confinement
Of these statements

[A]. 1, 2, 3 are correct
[B]. 1, 2, 4 are correct
[C]. 1 and 3 are correct
[D]. 1, 3, 4 are correct

Answer: Option D

Explanation:

No answer description available for this question.

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