Multiple Choice
Light-emitting diodes are semiconductors that emit light when a current is passed through them. What is the key factor that must be changed to change the wavelength of the emitted light in an LED?
A) the width of the valence band
B) the width of the conduction band
C) the width of the band gap
D) the magnitude of the current
E) the type of semiconductor (p vs.n)
Correct Answer:
Verified
Correct Answer:
Verified
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Q2: Which of the following diagrams shows the
Q3: Which of the following compounds has a
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Q8: Which of the following diagrams shows the
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