Semiconductor Electronics Materials Devices And Simple Circuits Ques 36
36. An LED is constructed from a p-n junction diode using GaAsP. The energy gap is $1.9 $ $eV$. The wavelength of the light emitted will be equal to
[NEET Odisha 2019]
(a) $654 \times 10^{-11}$ $ m$
(b) $10.4 \times 10^{-26}$ $ m$
(c) $654 $ $nm$
(d) $654 $ $\AA$
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Answer:
Correct Answer: 36.(c)
Solution:
- (c) $\lambda=\frac{12400}{E_g} \AA=\frac{12400}{1.9}=6526 \AA \simeq 654 $ $nm$
BETA
