Post-UTME Physics 2005 Objective — Question 15
Question 15 of 23 from the Post-UTME Screening (Post-UTME) Physics 2005 Objective paper, with the correct answer and a full explanation.
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Which of the following statements is correct about a semi-conductor at room temperature
- A. The valence band is filled and the conduction band is partly filled
- B. The valence band is completely filled
- C. The valence band is almost filled and the conduction band is almost emptyCorrect
- D. The valence band is empty and the conduction band is filled
Explanation
In a semiconductor at room temperature, the valence band is almost (but not completely) filled, and the conduction band is almost empty.
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