On doping Ge metal with a little of In, one gets:

p-type semiconductor

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n-type semiconductor

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insulator

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rectifier

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Solution

The correct option is A p-type semiconductor
Doping of group 14 elements such as Germanium with elements of group 13 gives rise to p-type semi-conductors while doping using group 15 elements give n-type semi-conductors.

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Similar questions

G e

I n

G a

Classify each of the following as being either a p-type or an n-type semiconductor:

(i) Ge doped with In (ii) B doped with Si.

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