Light Emitting Diode (LED) converts

Options :
  1. light energy into electrical energy
  2. electrical energy into light energy
  3. thermal energy into light energy
  4. mechinical energy into electrical energy

Answer and Explanation :-

Answer: Option 2


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Seek and see all the marvels around you. You will get tired of looking at yourself alone, and that fatigue will make you deaf and blind to everything else. - Don Juan
-Carlos Castaneda The Teachings of Don Juan: A Yaqui Way of Knowledge