Opto Electronics » Exercise – 1
14. The colour of an LED can be changed by :
(a) Using different band gap semiconductors
(b) Varying the doping level of the semiconductor
(c) Increasing applied voltage
(d) None of the aboveSubject Name : Electronics Engineering Exam Name : IIT GATE, UPSC ESE, RRB, SSC, DMRC, NMRC, BSNL, DRDO, ISRO, BARC, NIELIT Posts Name : Assistant Engineer, Management Trainee, Junior Engineer, Technical Assistant Electronics & Communication Engineering Books
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