Class 12th Physics Most VVI Objective MCQ Question Chapter Wise Electronics Devices ELECTRONIC DEVICES 1. The impurity doped in germanium to obtain n-type germanium is : (A) Tetravalent (B) Trivalent (C) Pentavalent (D) None of these Answer :- (C) 2. In full wave rectification, if input frequency is 50 Hz, then output frequency will be : (A) 50 […]
