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Which of the following , when added as a...

Which of the following , when added as an impurity, into the silicon, produces n-type semiconductor ?

A

phosphorus

B

Aluminium

C

Magnesium

D

Both (b) and (c)

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The correct Answer is:
A
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NEET PREVIOUS YEAR (YEARWISE + CHAPTERWISE)-SOLID AND SEMICONDUCTOR DEVICES-Exercise
  1. The current gain for a transistor working as a common-base amplifier i...

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  2. When N-P-N transistor is used as an amplifier-

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  3. Which of the following , when added as an impurity, into the silicon, ...

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  4. Which of the following gates corresponds to the truth table given belo...

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  5. In the figure, the input is across the terminals A and C and the o...

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  6. An oscillator is nothing but an amplifier with

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  7. When a p-n junction diode is reverse biased the flow of current across...

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  8. The part of a transistor which is most heavily doped to produce large ...

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  9. A piece of copper and the other of germanium are cooled from the room ...

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  10. Diamond is very hard, because

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  11. For an electronic valve, the plate current I and plate voltage V in th...

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  12. Which one of the following is the weakest kind of the bonding in solid...

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  13. For amplification by a triode, the signal to be amplified is given to

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  14. The following truth table corresponds to the logical gate

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  15. To use a transistor as an amplifier

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  16. The depletion layer in P-N junction region is caused by

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  17. In a common base ampifier , the phase difference between the input sig...

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  18. When a triode is used as an amplifier the phase difference between the...

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  19. Radiowaves of constant amplitude can be generated with

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  20. When N-type of semiconductor is heated

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