question_answer 70)

  To get a n-type semiconductor from silicon, it should be doped with a substance with valency..........                                            (a) 2                 (b) 1                  (c) 3                  (d) 5  

Answer:

                  (d) To get a n-type semiconductor from silicon, it should be doped with a substance with valence 5.                                                                         e.g., Si doped with P lead to formation of n-type semiconductor as shown below