JEE PHYSICS MCQ: SEMI CONDUCTOR DEVICES

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In semiconductors at room temperature: -

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Correct option: A

The valence band is partially empty and conduction band is partially filled

Option A is correct because, at room temperature, some electrons in semiconductors gain enough energy to move from the valence band to the conduction band, resulting in both bands being partially filled.

More Questions from SEMI CONDUCTOR DEVICES

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

PNP

transistor the base is the

N

-region. Its width relative to the

P

-region is A solid reflects incident light and its electrical conductivity decreases with temperature. The binding in this solid is An alternating current can be converted into direct current by a A N–P–N transistor is used in inverse active mode of operation then its emitter base junction should be in In the case of constants

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

of a transistor