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Microwave Communication

Q1:

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

ANS:D - 1, 3, 4 are correct

No answer description is available.



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