Opto Electronics » Exercise – 1
2. An LED is made up of :
(a) Phosphorescent material
(b) Germanium
(c) Silicon
(d) Gallium arsenideSubject 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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