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A semiconductor X is made by dopping a g...

A semiconductor `X` is made by dopping a germanium crystal with arsenic `(Z=33)`. A scond semiconductor `Y` is made by dopping germanium with indium `(Z=49)`. The two are joined end to end and connected to a battery as shown. Which of the following statements is correct?

A

X is P-type, Y is N-type and the junction is forward biased

B

X is N-type, Y is P-type and the junction is forward biased

C

X is P-type, Y is N-type and the junction is reverse biased

D

X is N-type, Y is P-type and the junction is revese biased

Text Solution

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The correct Answer is:
D
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MOTION-SEMI CONDUCTOR AND LOGIC GATES-EXERCISE 3
  1. A semiconductor X is made by dopping a germanium crystal with arsenic ...

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  2. If temperature increases, conductivity of semiconductor will be –

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  3. At 0K, silicon behave as –

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  4. The energy band gap is maximum in

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

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  6. In the middle of the depletion layer of a reverse - biased p - n junc...

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  7. The difference in the variation of resistance with temperature in a me...

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  8. A strip of copper and another of germanium are cooled from room tempe...

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  9. When n-p-n transistor is used as an amplifier

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  10. A piece of copper and another of germanium are cooled from room temper...

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  11. The manifestation of band structure in solids is due to

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  12. When p-n junction diode is forward biased then

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  13. The electrical conductivity of a semiconductor increases when electrom...

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  14. In a full wave rectifier circuit operating from 50 Hz mains frequency ...

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  15. In a common-base amplifier, the phase difference between the input sig...

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  16. If the ratio of the concentration of electron to that of holes in a se...

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  17. A solid which is not transperent to visible light and whose conductivi...

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  18. In a common base mode of transistor, collector current is 5.488 mA for...

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  19. If the lattice constant of this semiconductor is decreased, then which...

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  20. In the following, which one of the diodes is reverse biased ?

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  21. The circuit has two oppositely connected ideal diodes in parallel. Wha...

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