Home › UP Board Class 12 › Physics › Semiconductor Electronics › A trivalent impurity is known as an:
A trivalent impurity is known as an:
AOscillator
BAcceptor
CAmplifier
DInsulator
Answer & Solution
Correct answer: B. Acceptor
1. It leaves a bond short of one electron.
2. That vacancy can accept an electron from a neighbour.
3. So the trivalent impurity is an acceptor.
4. The answer is acceptor.
_Source: NCERT Class 12 Physics, Ch 14 'Semiconductor Electronics'_
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