The forbidden energy gap in the energy bands of germanium at room temperature is about $......$ $eV$.
- A$1.1$
- B$0.1$
- C$0.67$
- D$6.7$
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The relation between the number of free electrons in semiconductors $(n)$ and its temperature $(T)$ is
Medium
View SolutionWhen the temperature of a semiconductor is increased,its resistance and electric conductivity respectively.
Which of the following statements is true?
Copper and Germanium are cooled from room temperature to $100 \ K$. Then,the resistance of
Assertion: If the temperature of a semiconductor is increased,then its resistance decreases.
Reason: The energy gap between the conduction band and the valence band is very small.
Reason: The energy gap between the conduction band and the valence band is very small.
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