A red LED emits light at 0.1 watt uniformly around it. The amplitude of the electric field of the light at a distance of 1 m from the diode is:
As we learnt in
LED (Light emitting diode) -
It gives out light radiation when forward biased .
- wherein
LED's are made of GaAsP ,Gap etc .
(Require low voltage ,long life )
Amplitude I = E0
or
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