Physics-(general)
NEET Physics (general) MCQ Question
Type: MCQ-fact-Hard-Class 12
What type of semiconductor is formed when silicon or germanium is doped with a trivalent impurity like Aluminium, Boron, or Indium?
A
p-type semiconductor
B
n-type semiconductor
C
intrinsic semiconductor
D
metallic conductor
Correct Answer
Option A
Detailed Explanation
A p-type semiconductor is created when Si or Ge is doped with a trivalent impurity, which has one valence electron less, leading to the formation of holes in the crystal lattice.
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