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To a germanium sample, traces of galium ...

To a germanium sample, traces of galium are added as an impurity. The resultant sample would behave like ……..

A

a good conductor.

B

a p-type semiconductor.

C

a n-type semiconductor

D

an insulator.

Text Solution

Verified by Experts

The correct Answer is:
B
a p-type semiconductor.
In short the absence of electron in a covalent bond of Ge exist hence hole are positive, so it is called p-semiconductor.
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KUMAR PRAKASHAN-SEMICONDUCTOR ELECTRONICS : MATERIALS, DEVICES AND SIMPLE CIRCUITS -Section-D : Multiple Choice Questions (MCQs) (MCQs asked in Competitive Exams)
  1. The rms value of a.c. signal in halfwave rectifier is ……

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  2. The valency of the impurity atom added to make germanium crystal into ...

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  3. To a germanium sample, traces of galium are added as an impurity. The ...

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  4. When the semiconductor is heated ……..

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  5. Which logic gate is represented by the following logic gates?

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  6. A Ge specimen is doped with Al. The concentration of acceptor atoms is...

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  7. Which of the following logic gate is an universal gate?

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  8. Write the truth table for circuit given in figure below consisting of ...

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  9. A light emitting diode (LED) has a voltage drop of 2 volt across it an...

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  10. In half wave rectification, what is the output frequency if the input ...

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  11. The forbidden gap in the energy bonds of silicons is ……

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  12. Which among the following is applicable to tapetum? (A) Protective la...

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  13. When the inputs of a two input logic gate are 0 and 0, the output is 1...

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  14. Which logic gate is represented by the following logic gates?

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  15. The direction of the electric field in p-n junction diode is …….

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  16. When the electromagnetic radiation of maximum wavelength of 2480 nm is...

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  17. To create AND gate require ……NAND gate.

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  18. What kind of p-n junction diode does not require any kind of bias?

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  19. The doping of minute quantity of antimony to a silicon crystal makes i...

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  20. How much is potential barrier in Si diode at room temperature?

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