Which of the following statements are true about

Question:

Which of the following statements are true about semiconductors?

(i) Silicon doped with an electron-rich impurity is a p-type semiconductor.

(ii) Silicon doped with an electron-rich impurity is an n-type semiconductor.

(iii) Delocalised electrons increase the conductivity of doped silicon.

(iv) An electron vacancy increases the conductivity of the n-type semiconductor.

Solution:

Option (ii) and (iii) are the answers.

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