Semiconductor Electronics Part 1

Section: Physics

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Question : 4 of 100

Marks: +1, -0

LED is constructed from GaAsP semiconducting material. The energy gap of this LED is

1.9\,\text{eV}

. Calculate the wavelength of light emitted and its colour.

[h=6.63 \times 10^{-34}\,\text{Js}

c=3 \times 10^{8}\,\text{m/s}

[26 Feb 2021 Shift 1]

$1046\,\text{nm}$ and red colour
$654\,\text{nm}$ and orange colour
$1046\,\text{nm}$ and blue colour
$654\,\text{nm}$ and red colour

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