railway RRB JE (CBT I + CBT II) Mock Test 2024 Electronic Devices Optical Devices Light Emitting Diode (LED)

LED के निर्माण के लिए सबसे उपयुक्त सामग्री क्या है?

1
IgZO
2
ZnP
3
ZnO
4
GaAsP
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