Q. GaAs emits which colour?

A
Red
B
Yellow
C
Infrared
D
Amber
Solution:

Main P-type dopant Gallium (Atomic Number
= 31) and N-type dopant Arsenide (Atomic Number=33). GaAs has a crystalline structure. It has a wavelength is 850 nm- 940 nm. It emits infrared.

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