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    Exam 40: Molecules and Solids
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    A Light Emitting Diode Emits Light of Approximate Wavelength 670
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A Light Emitting Diode Emits Light of Approximate Wavelength 670

Question 23

Question 23

Multiple Choice

A light emitting diode emits light of approximate wavelength 670 nm. What is the band gap?


A) 1.86 eV
B) 4.14 eV
C) 1.80 eV
D) 3.72 eV
E) 2.70 eV

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