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Statement-1: In semiconductors current i...

Statement-1: In semiconductors current is obtained due to motion of electrons and holes.
Statement-2: Breaking up of covalent bond produces holes in valence band and electrons in conduction band.

A

Both statement-1 and statement-2 are true, and statement-2 is the correct explanation of statement 1.

B

Both statement-1 and statement-2 are true but statement-2 is not the correct explanation of statement-2

C

Statement-1 is true but statement-2 is false.

D

Statement-1 is false but statement-2 true.

Text Solution

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The correct Answer is:
A
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BANSAL-SEMICONDUCTORS-Exercise-2
  1. Statement 1: Conductivity of semiconductor increases with increase in ...

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  2. Statement 1: Conductivity of semiconductors decreases with increase in...

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  3. Statement-1: In semiconductors current is obtained due to motion of el...

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  4. Statement 1: Doping concentration is maximum in emitter in transistor....

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  5. Statement-1 surface wave and sky wave can not be observed on moon. S...

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  6. Statement 1: In ground wave transmission the radio signals die out aft...

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  7. Statement 1: Ground wave communication is effective only at low freque...

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  8. Statement 1: The refractive index of the ionosphere increases as we go...

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  9. Statement 1: Sky wave communication is not suitable for frequencies gr...

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  10. Statement 1: Microwaves and not radiowaves are used in satellite commu...

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  11. Statement 1: Long distance radio broadcasts use short wave bands. St...

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  12. Statement 1: Sky wave communication is not used to transmit TV signals...

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  13. The question has statement - 1 and statement - 2 Of the four choices ...

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  14. The physical property (ies) which (is) are same along all the directio...

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  15. Choose the wrong statement

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  16. Which of the following statements is correct-

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  17. The materials resistance of which decreases with increases in temperat...

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  18. Which of the following statements is correct-

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  19. Pick the correct statement the reverse current in p-n junction diode

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  20. In a p-n junction–

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