As temperature increases - Electronic Devices and Circuits

Electronics and Communication Engineering (ECE) : Electronic Devices and Circuits - Quiz(MCQ)

As temperature increases

the forbidden energy gap in silicon and germanium increase

the forbidden energy gap in silicon and germanium decrease

the forbidden energy gap in silicon increases while that in germanium decreases

the forbidden energy gap in silicon decreases while that in germanium decreases

Correct Answer : Option (B) : the forbidden energy gap in silicon and germanium decrease

Explanation : Therefore, conductivity increases.

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angle of incidence of radiation

surface conditions of the surface

intensity of the incident radiation

wavelength of the incident radiation

Correct Answer : wavelength of the incident radiation

For radiating ultraviolet rays, LEDs use

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zinc sulphide

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None of the above

Correct Answer : zinc sulphide

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emitter base : reverse, collector base : reverse

emitter base : reverse, collector base : forward

emitter base : forward, collector base : forward

emitter base : forward, collector base : reverse

Correct Answer : emitter base : forward, collector base : reverse