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Electronic Devices and Circuits

Electronic Devices and Circuits
Which of the following has highest resistivity?

Mica
Air
Paraffin wax
Mineral oil

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Electronic Devices and Circuits
Piezoelectric quartz crystal resonators find application where

Signal frequency control is required
Signal amplification is required
Modulation of signal is required
Rectification of the signal is required

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Electronic Devices and Circuits
Work function is the maximum energy required by the fastest electron at 0 K to escape from the metal surface.

True
False

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

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

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

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

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Electronic Devices and Circuits
The depletion layer width of Junction

Is independent of applied voltage
Increases with heavy doping
Is increased under reverse bias
Decreases with light doping

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