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    Physics for Scientists and Engineers Study Set 4
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    Exam 40: Molecules and Solids
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    A Material Has an Energy Gap of 2
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A Material Has an Energy Gap of 2

Question 38

Question 38

Multiple Choice

A material has an energy gap of 2.5 eV. What energy photons in the visible range (1.8 eV to 3.6 eV) would excite electrons into the conduction band?


A) 1.8 eV
B) 2.5 eV
C) 1.8 eV up to 2.5 eV
D) 2.5 eV up to 3.6 eV
E) 1.5 eV

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