Opto Electronics » Exercise – 1
23. Which material is generally used to build LED ?
(a) Compounds of gallium
(b) Compounds of phosphorus
(c) Compounds of germanium
(d) Compounds of siliconSubject 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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