question_answer

      Which of the following statements is/are correct?

I. Pure Si doped with trivalent impurities gives a p-type semiconductor

II. Majority carriers in a n-type semiconductor are holes

III. Minority carriers in a p-type semiconductor are electrons

IV. The resistance of intrinsic semiconductor decreases with increase of temperature

A) I only                    

B)        I, III and IV

C) I and IV                

D)        II only