True or Flase Light emitting diode, LEDs, with colors  with different wavelength acts as source of lights but not the laser.

Delmar's Standard Textbook Of Electricity
7th Edition
ISBN:9781337900348
Author:Stephen L. Herman
Publisher:Stephen L. Herman
Chapter1: Atomic Structure
Section: Chapter Questions
Problem 6RQ: How many valence electrons are generally contained in materials used for insulators?
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True or Flase

Light emitting diode, LEDs, with colors  with different wavelength acts as source of lights but not the laser. 

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