Home
Class 12
PHYSICS
Assertion : The electrons in the conduct...

Assertion : The electrons in the conduction band have higher energy than those in the valence band of a semiconductor
Reason : The conduction band lies above the energy gap and valence band lies below the energy gap.

A

If both assertion and reason are true and reason is the correct explanation of assertion.

B

If both assertion and reason are true not but reason is not the correct explanation of assertion.

C

If assertion is true but reason is false

D

If both assertion and reason are false.

Text Solution

Verified by Experts

The correct Answer is:
A
Promotional Banner

Topper's Solved these Questions

  • SEMICONDUCTOR ELECTRONICS : MATERIALS , DEVICES AND SIMPLE CIRCUITS

    NCERT FINGERTIPS ENGLISH|Exercise Classification Of Metals, Conductors And Semiconductors|8 Videos

  • SEMICONDUCTOR ELECTRONICS : MATERIALS , DEVICES AND SIMPLE CIRCUITS

    NCERT FINGERTIPS ENGLISH|Exercise Intrinsic Semiconductor|6 Videos

  • SEMICONDUCTOR ELECTRONICS : MATERIALS , DEVICES AND SIMPLE CIRCUITS

    NCERT FINGERTIPS ENGLISH|Exercise NCERT|8 Videos

  • RAY OPTICS AND OPTICAL INSTRUMENTS

    NCERT FINGERTIPS ENGLISH|Exercise NCERT Exemplar|11 Videos

  • WAVE OPTICS

    NCERT FINGERTIPS ENGLISH|Exercise Assertion And Reason|15 Videos

Similar Questions

Explore conceptually related problems

Find the wavelength of light that may excite an electron in the valence band of diamond to the conduction band. The energy gap is 5.50 eV

The energy band gap of Si is

In an semiconductor the separation between conduction band and valence band is of the order of

In an insulator, the forbidden energy gap between the valence band and conduction band is of the order of

In a good conductor, what is the energy gap between the conduction band and the valence band.?

Draw energy band diagram of conductors, semiconductors and insulators.

Assertion: If there is some gap between the conduction band and the valence band, electrons in the valence band all remain bound and no free electrons are available in the conduction band. Then the material is an insulator. Reason: Resistance of insulators is very low

The energy gaps (E_(g)) between valence band and conduction band for diamond, silicon and germanium are in the order

The for bidden gap in the energy bands of sillcon is

In a doped semiconductor, the impurity level is 40 meV above the valence band. The semicoductor is