Physics-(general)
NEET Physics (general) MCQ Question
Type: MCQ-numerical-Hard-Class 12
A silicon crystal is doped with a pentavalent element. If the concentration of dopant atoms is 1 x 10^16 atoms/cm³, what can be said about the majority carrier concentration in the n-type semiconductor?
A
Approximately 1 x 10^16 electrons/cm³
B
Approximately 1 x 10^16 holes/cm³
C
Approximately 5 x 10^16 electrons/cm³
D
Approximately 5 x 10^16 holes/cm³
Correct Answer
Option A
Detailed Explanation
Doping silicon with a pentavalent element introduces extra electrons, making electrons the majority carriers. Since each dopant atom contributes one electron, the concentration is approximately equal to the dopant concentration.
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