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The density of electron and holes in an ...

The density of electron and holes in an intrinsic semiconductor is `n_( e)` and `n_(h)` respectively. Which of the following options are true?

A

`n_(h) gt n_(e )`

B

`n_(e ) gt n_(h)`

C

`n_( e) = n_(h)`

D

`n_(h) gt gt n_(e )`

Text Solution

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The correct Answer is:
C
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KUMAR PRAKASHAN-SEMICONDUCTOR ELECTRONICS : MATERIALS, DEVICES AND SIMPLE CIRCUITS -Section-D : Multiple Choice Questions (MCQs) (MCQs From .DARPAN. Based On Textbook)
  1. When the semiconductor is heated ……..

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  2. Electric field is applied to a semiconductor. In it density of conduct...

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  3. The density of electron and holes in an intrinsic semiconductor is n( ...

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  4. …… is the charge on hole.

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  5. Holes and electrons are …..

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  6. To prepare the n-type semiconductor from a tetravalent Si or Ge, the i...

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  7. In intrinsic semiconductor the drift velocity of holes and electron a...

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  8. In a semiconducting material the mobilities of electrons and holes are...

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  9. To make a p-type semiconductor out of pure silicon, it has to mix atom...

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  10. p-type semiconductor is formed when …….. (A) As impurity is mixed i...

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  11. Is there any benefit to adding trivalent or pentavalent impurity to th...

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  12. Trivalent and pentavalent impurities are ….., respectively in terms o...

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  13. The ratio of number density of free electron and hole in p-type semico...

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  14. The number density of electron is 4.5xx10^(22)m^(-3) and number densi...

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  15. The number density of electron is 7xx10^(12)m^(-3) and number density ...

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  16. Which of the diagram shown in figure represents variation of total me...

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  17. What is the unit of energy?

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  18. n-type semiconductor ………

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  19. In one atom of As is added per 10^(3) atoms of Ge then the number of f...

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  20. If one Al atom added to 10^(9) per atom of Si then charge on holes in ...

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