The Energy Gap Between the Valence and Conduction Bands in a Certain

question 35

Multiple Choice

The energy gap between the valence and conduction bands in a certain semiconductor is 1.25 eV. What is the threshold wavelength for optical absorption in this substance?

• A)599 nm
• B)639 nm
• C)959 nm
• D)873 nm
• E)995 nm

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