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GATE ECE 2026 | Question: 44
Consider an LED based on a direct bandgap semiconductor material with energy bandgap $1.3$ eV.Given: Plank's constant, $h=6.63 \times 10^{-34} \mathrm{~J} \mathrm{~s}$ an...
gatecse
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Feb 23
LED
gateec-2026
electronic-devices
energy-bands-in-intrinsic-and-extrinsic-semiconductors
led
semiconductor
multiple-selects
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606
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GATE ECE 2001 | Question: 2.10
In the figure, the $\text{LED}$emits light when both $S_{1}$ and $S_{2}$ are closed.emits light when both $S_{1}$ and $S_{2}$ are open.emits light when only of $S_{1}$ or...
admin
606
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Sep 29, 2022
LED
gate2001-ec
circuit-analysis
diode-circuits
others
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358
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GATE ECE 2003 | Question: 42
A particular green $\text{LED}$ emits light of wavelength $5490 \text{ A}$. The energy bandgap of the semiconductor material used there is (Planck's constant = $6.626 \ti...
admin
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Sep 26, 2022
LED
gate2003-ec
electronic-devices
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403
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GATE ECE 1992 | Question 1.13
An infrared $\text{LED}$ is usually fabricated from$\text{Ge}$$\mathrm{Si}$$\text{Ga As}$$\text{Ga As P.}$
admin
403
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asked
Sep 13, 2022
LED
gate1992-ec
semiconductor
electronic-devices
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