Q. LEDs are manufactured using

A
Silicon
B
Germanium
C
Gallium Arsenide
D
Silicon and Germanium
Solution:

The semiconductors used for LED manufacture are gallium arsenide (GaAs), gallium phosphide (GaP), or gallium arsenide phosphide (GaAsP). The different semiconductor materials (called substrates) and different impurities added in them result in different colors of light from the LED.

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