On doping Ge metal with a little of In or Ga, we get
(A) p-type semiconductor
(B) Insulator
(C) n-type semi conductor
(D) Rectifier
Correct option (A) p-type semiconductor
Explanation:
Extrinsic semiconductors doped with trivalent impurity are called p-type semiconductors. Both In and Ga are Trivalent (valency 3) dopants.
