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Atoms of phosphorus aresnic indium and b...

Atoms of phosphorus aresnic indium and bismuth are used for doping pure semicondluctors to produce p type or n type semiconductors p tyhpe semocnductor

A

phosphourus arsenic indium and bismuth

B

indium and arsenic

C

phosphrous bismuth and indium

D

indium only

Text Solution

Verified by Experts

Indium is a trivalent impurity and all others are pentavalent impurities .Hence option (d) is correct.
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MODERN PUBLICATION-SEMICONDUCTOR ELECTRONICS METERIALS DEVICES AND SIMPLE CIRCUITS -COMPETION FILE (MULTIPLE CHOICE QUESTIONS WITH ONLY ONE CORRECT ANSWER)
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  8. I-V characteristics of four semiconductor devices are in graphs (i) ...

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  9. In which of the following connections the diode is forward biased

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  10. The above combination of gates produces a

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  15. An n-p-n tansistor circuit is show below The arrangement represe...

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  17. In the circuit given below the p-n junction diode is ideal with negli...

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  18. In which of the following ciruict the potiential drop across the two p...

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  19. A piece of copper and anotehr piece of silicon are cooled down to 80 k...

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