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If a small amount of antimony is added t...

If a small amount of antimony is added to germanium crystal ………

A

it becomes a p-type semiconductor.

B

the antimony becomes an acceptor atom.

C

there will be more free electron than holes in the semiconductor.

D

its resistance is increased.

Text Solution

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The correct Answer is:
C
there will be more free electron than holes in the semiconductor.
When a small amount of antimony (pentavalent) is added to germanium crystal, it formed n-type of semiconductor so it has more number of free electrons than the holes.
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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. Which of the following device acts a complete electronic circuit?

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  2. Which of the following statement is true for the forward bias of a p-n...

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  3. If a small amount of antimony is added to germanium crystal ………

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  4. Pure Si at 500 K has equal number of electron (n(e )) and hole (n(h)) ...

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  5. Keeping forward bias voltage from 0.6 V to 0.7 V in a p-n junction dio...

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  6. In a CE transistor amplifier, the audio signal voltage across the coll...

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  7. C and Si both have same lattice structure, having 4 bonding electrons ...

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

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  9. Justify the output waveform (Y) of the OR gate for the following input...

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  10. The output of the given circuit in figure.

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  11. In a n-type semiconductor, which of the following statement is true?

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  12. The potential barrier of the p-n junction depends …….. (i) On kind o...

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  13. In a n-type semiconductor, which of the following statement is true?

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  14. A helicopter is moving in upward direction with speed of 10 m/s. If th...

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

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  16. A cell of emf E and internal resistance r is connected across an exter...

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  17. Derive an expression for current I passing through an AC circuit conta...

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  18. In the circuit shown the reading of voltmeter V(3) and Ammeter 'A' wil...

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  19. Justify the output waveform (Y) of the OR gate for the following input...

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  20. If A and B are two matrices of the order 3xxmand3xxn , respectively , ...

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