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Choose the correct option: Electrical co...

Choose the correct option: Electrical conductivity of a semi conductor -

A

decreases with rise in its temperature.

B

increases with rise in its temperature.

C

does not changes with temperature.

D

first decreases and then increases with rise in temperature.

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PUNJAB BOARD PREVIOUS YEAR PAPERS-Solids-Exercise
  1. What is n-type semiconductor ?

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  2. What do you mean by p-type semi conductor ?

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  3. Choose the correct option: Electrical conductivity of a semi conductor...

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  4. Choose the correct option : A pure semiconductor behaves slightly as a...

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  5. For metal conductors, the electrical resistivity decreases with the ri...

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  6. p-type semiconductor is obtained by doping silicon with Indium(In).(Ye...

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  7. What are extrinsic semiconductor ? Explain acceptor-type semi-conducto...

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  8. Explain various energy bands in an atom.

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  9. What is doping ? Write three necessary conditions for it and two metho...

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  10. Distinguish between conductor and semiconductor on the basis of their ...

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  11. hat are extrinsic semi-conductors ? Explain donor type semi-conductor.

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  12. What are ‘holes’? Write their characteristics.

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  13. Distinguish between energy levels and energy bands.

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  14. What are extrinsic semiconductor ? Explain acceptor-type semi-conducto...

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  15. Distinguish between n-type and p-type semiconductors.

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  16. Distinguish between intrinsic and extrinsic semiconductors.

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  17. What is the difference between a single crystal and polycrystal ?

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  18. What is doping ? Write three necessary conditions for it and two metho...

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  19. Define hole. Give its two characteristics.

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  20. Distinguish between intrinsic and extrinsic semiconductors.

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