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Electronic Devices and Circuits

Electronic Devices and Circuits
The forbidden energy gap between the valence band and conduction band will be least in case of

All of these
Semiconductors
Insulators
Metals

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Electronic Devices and Circuits
Free electrons exist in

First band
Second band
Third band
Conduction band

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Electronic Devices and Circuits
The amount of photoelectric emission current depends on

Frequency of incident radiation
None of these
Both frequency and intensity of incident radiation
Intensity of incident radiation

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Electronic Devices and Circuits
Fermi level is the amount of energy in which

None of these
Must be given to an electron move to conduction band
An electron can have at room temperature
A hole can have at room temperature

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Electronic Devices and Circuits
The sensitivity of human eyes is maximum at

Green portion of spectrum
Violet portion of spectrum
White portion of spectrum
Red portion of spectrum

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Electronic Devices and Circuits
In a semiconductor diode, the barrier offers opposition to

Free electrons in N-region only
Majority as well as minority carriers in both regions
Majority carriers in both regions
Holes in P-region only

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