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Q.

Pick  the correct statement

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a

Doping  will increase  conductivity of a  pure semi conductor

b

Impurity  atoms are called dopants

c

The highest  energy that an electron can have at 0K  is called  Fermi energy

d

All the above are correct

answer is D.

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Detailed Solution

Doping will create more number of charge carriers in a pure Semi conductor (intrinsic semiconductor).Examples of dopant are pentavalent (arsenic) and trivalent (boron)
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