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A doped semiconductor is described as:
AExtrinsic
BIntrinsic
CInsulating
DConducting
Answer & Solution
Correct answer: A. Extrinsic
1. An undoped crystal is intrinsic.
2. Doping adds carriers from outside the pure lattice.
3. The doped material is called extrinsic.
4. So the answer is extrinsic.
_Source: NCERT Class 12 Physics, Ch 14 'Semiconductor Electronics'_
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