JEE PHYSICS MCQ: SEMI CONDUCTOR DEVICES

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Donor type impurity is found in

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Correct option: B

Pentavalent elements

Option B (Pentavalent elements) is correct because pentavalent impurities donate extra electrons, making them donor-type impurities in semiconductors.

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A PN-junction has a thickness of the order of In a

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\mathrm{\alpha\; and\; \beta }

of a transistor