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Conductors, Insulators And Semiconductors
Question
To convert a pure semiconductor into n-type semiconductor, what type of impurity is added to it?
Solution
Penta-valent
Question
Draw a labelled energy band diagram for a solid which is an insulator. What is the main difference between this diagram and that of a semiconductor?
Solution
Insulator Example - diamond
Difference between insulator and semiconductor is that the forbidden energy gap is 1.1 eV in case of semiconductor (silicon), whereas forbidden energy gap of insulator is very i.e. 7 eV (diamond).
Question
How can an n type semiconductor be obtained from a pure crystal of germanium?
Solution
n’ type semiconductor can be obtained from a pure crystal of germanium by adding pentavalent impurity atom such as antimony, phosphorus or arsenic.
Question
In the following nuclear reaction:
What does X stand for?
Solution
X stands for neutrino.
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Mock Test Series
Mock Test Series