MyQuestionIcon

4

You visited us 4 times! Enjoying our articles? Unlock Full Access!

Light Emitting Diode

Which of the ...

Question

Which of the following theories could not explain completely the behaviour of conductors, insulators, and semiconductors.

A

energy band theory

No worries! We‘ve got your back. Try BYJU‘S free classes today!

B

free electron theory

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses

C

valence electron theory

No worries! We‘ve got your back. Try BYJU‘S free classes today!

D

None

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Open in App

Solution

The correct option is B free electron theory
The electrical conductivity of semiconductor and insulator cannot be explained by free electron theory.

Suggest Corrections

thumbs-up

0

Similar questions

Q. Assertion :In some solids, the valence band is completely filled while the next higher band separated by an energy gap of few electrons-volts is completely empty. Reason: In insulators the energy band completely filled with electrons( the valence band) and above it is empty band (the conduction band)

Q.
In insulators, the valence bands are completely and the large band gap prevents the promotion of electrons to empty space whereas in semiconductor band gap is low.

Q. Choose the correct option to complete the following statement.
In an insulator, the band gap is so ............... that the electrons in the valence band are not easily ............... into the conduction band.

Q. Electron pool theory of metals can not explain which of the following characteristics of metals?

In terms of band theory, what is the difference

(i) Between a conductor and an insulator ?

(ii) Between a conductor and a semiconductor ?

View More

Join BYJU'S Learning Program

similar_icon

Related Videos

lock

Circles - Practice Set 1

PHYSICS

Watch in App

explore_more_icon

Explore more

Light Emitting Diode

Standard X Physics

Join BYJU'S Learning Program

CrossIcon