Question

Statement-I : By doping silicon semiconductor with pentavalent material, the electrons density increases.

Statement-II : The n-type semiconductor has net negative charge. In the light of the above statements, choose the most appropriate answer from the options given below :

(1) Statement-I is true but Statement-II is false.

(2) Statement-I is false but Statement-II is true.

(3) Both Statement-I and Statement-II are true.

(4) Both Statement-I and Statement-II are false.

Answer 1

Correct Option is (1) Statement-I is true but Statement-II is false

Pentavalent activities have excess free e– So e– density increases but overall semiconductor is neutral.