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NEET2010PhysicsSemiconductorsActual

Which one of the following statement is false?

Options

  1. APure Si doped with trivalent impurities gives a p-type semiconductor
  2. BMajority carriers in a n-type semiconductor are holes
  3. CMinority carriers in a p-type semiconductor are electrons
  4. DThe resistance of intrinsic semiconductor decreases with increase of temperature

Correct answer

B. Majority carriers in a n-type semiconductor are holes

Step-by-step solution

p-type semiconductor are obtained by adding a small amount of trivalent impurity to a pure sample of semiconductor (Ge). Majority charge carriers-holes Minority charge carriers-electrons n-type semiconductor are obtained by adding a small amount of pentavalent impurity to a pure sample of semiconductor ( Ge ) . Majority charge carriers-electrons The resistance of intrinsic semiconductors decreases with increase of temperature.

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