When a large number of atoms are brought together to form a crystal

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

the energy levels of inner shell electrons are affected appreciably by the presence of other neighbouring atoms.

The energy levels of outer shell electrons are affected appreciably by the presence of other neighbouring atoms.

the energy levels of both inner and outer shell electrons are affected appreciably by the presence of other neighbouring atoms.

None of the above

Correct Answer : Option (B) : The energy levels of outer shell electrons are affected appreciably by the presence of other neighbouring atoms.

Explanation : Inner shell electrons are tightly bound to the nucleus. Their energy levels cannot be affected by presence of other atoms.

Recently Updated in Electronic Devices and Circuits Questions

The kinetic energy of photoelectrons emitted by a photo sensitive surface depends on

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

gallium arsenide

zinc sulphide

gallium phosphide

None of the above

Correct Answer : zinc sulphide

For an P-N-P transistor in normal operation its junction are biased as

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