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Assertion: If there is some gap between ...

Assertion: If there is some gap between the conduction band and the valence band, electrons in the valence band all remain bound and no free electrons are available in the conduction band. Then the material is an insulator.
Reason: Resistance of insulators is very low

A

A is true, B is false

B

A is false, B is true

C

A and B are true

D

A and B are false

Text Solution

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The correct Answer is:
B
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AAKASH SERIES-SEMICONDUCTOR DEVICES-EXERCISE -I (MORE THAN ONE OPTION TYPE QUESTIONS)
  1. Assertion: If there is some gap between the conduction band and the va...

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  2. In a semiconductor diode, the reverse biased current is due to orbit o...

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  3. Choose the correct statement of the following (A): In P-type semicondu...

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  4. Holes are charge carries in A) Intrinsic semiconductors B) Ionic solid...

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  5. Choose the correct statement of the following (A): In P-type semicondu...

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  6. Which of the following statements is true about semiconductors ?

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  7. In a p -n junction, a) new holes and conduction electrons are produced...

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  8. The electrical conductivity of pure germanium can be increased by

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  9. Choose the correct statement of the following (A): In P-type semicondu...

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  10. Statement(A) : In P-type semi conductor Fermi - energy level lies near...

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  11. Choose the type of semiconductor from the following options for which ...

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  12. When a potential difference is applied across the current passing thro...

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  13. Which of the following statements concerning depletion region of an un...

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  14. Consider the following statements A and B and identify the correct cho...

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  15. Consider the following statements and identify the correct answer. a) ...

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  16. Zener diode when used as a voltage regulator is connected a) in forwar...

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  17. Which of the following is a correct statement? A: A zener diode is mai...

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  18. Consider the following statements A and B and identify the correct ans...

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  19. Consider the following statements A and B and identify the correct ans...

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  20. Transistor can be used as :-

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