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There is a small energy gap between the ...

There is a small energy gap between the conduction and valence bands of

A

copper

B

silver

C

silicon

D

aluminium

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The correct Answer is:
C
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Statement I : Electrical conductivity of semiconductors increases with rise in temperature. Statement II : There is a small energy gap between conduction band and valence band.

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

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

NIKITA PUBLICATION-SEMICONDUCTORS-MCQS
  1. The for bidden gap in the energy bands of sillcon is

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  2. At absolute zero temperature the forbidden gap of conductor is

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  3. There is a small energy gap between the conduction and valence bands o...

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  4. If the temperature of semiconductor is increased the number of electro...

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  5. In a good conductor, what is the energy gap between the conduction b...

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  6. If the temperature of semiconductor will increase then the forbiddenga...

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  7. The level formed due to impurity atom, in the for hidden energy gap, v...

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  8. The valence band and the conduction band of a substance overlap at ord...

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  9. The Ge behaves as semiconductor even though all electrons in the valen...

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  10. The most commonly used semiconductors are

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  11. The behavior of pure Ge crystal, at absolute zero temperature is that ...

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  12. The conductivity of semiconductors

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  13. The free electron model of metallic solid does not explain

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  14. A pure semiconductor

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  15. Majority carries in semiconductor are

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  16. In a semiconductor, the mobility of holes is

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  17. Which of the following is a typical example of a semiconductor ?

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  18. A hole in semiconductor is different from an electron, because it is

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  19. Doping materials are called impurities, because they

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  20. The movement of a hole is brought about by the vacancy being filled...

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