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p-type of semiconductors are produced by adding impurity containing less electrons (i.e. atoms of group 13). Ge belongs to Group 14 and In to Group 13. Hence, on doping, p-type semiconductor is obtained.

1. a) p-type of semiconductors are produced by adding impurity containing less electrons (i.e. atoms of group 13).
2. b) Ge belongs to Group 14 and In to Group 13.
3. c) Hence, on doping, p-type semiconductor is obtained.
4. d) None of the above.

Correct answer: a) p-type of semiconductors are produced by adding impurity containing less electrons (i.e. atoms of group 13).

Solution

p-type semiconductors are produced by adding impurity containing less electrons, which is achieved by adding atoms of group 13.

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