The correct statement variation of the conductivity of semiconductors like Ge and Si is given by

Question

The correct statement variation of the conductivity of semiconductors like Ge and Si is given by (A) Increases when it is doped with tetravalent impurity (B) Increases when it is doped with pentavalent or trivalent impurity (C) Increases when it is doped with pentavalent impurity and decreases when it is doped with trivalent impurity (D) Decreases when it is doped with pentavalent impurity and increases when it is doped with trivalent impurity.

Tardigrade Admin · Accepted Answer

Correct answer is (b) Increases when it is doped with pentavalent or trivalent impurity

Q. The correct statement variation of the conductivity of semiconductors like Ge and Si is given by

Increases when it is doped with tetravalent impurity

Increases when it is doped with pentavalent or trivalent impurity

Increases when it is doped with pentavalent impurity and decreases when it is doped with trivalent impurity

Decreases when it is doped with pentavalent impurity and increases when it is doped with trivalent impurity.

Correct answer is (b) Increases when it is doped with pentavalent or trivalent impurity