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
- A$10.4 \times 10^{-26}\; m$
- B$654 \;nm$
- C$654 \;\mathring A$
- D$654 \times 10^{-11} \;m$
Explore More
Similar Questions
The $I-V$ characteristic of an $LED$ is represented by which of the following graphs?
Why is the $I-V$ characteristic of a solar cell drawn in the fourth quadrant of the coordinate system?
Medium
View SolutionState the band gap of the semiconductor used in the making of $LED$.
Easy
View SolutionWhat are optoelectronic devices? Give the names of such major devices.
Difficult
View SolutionIdentify the devices which work on solar energy.
$(a)$ Photodiode
$(b)$ Photovoltaic cell
$(c)$ $LED$
$(d)$ Photo-thermal devices
$(a)$ Photodiode
$(b)$ Photovoltaic cell
$(c)$ $LED$
$(d)$ Photo-thermal devices
Vedclass Products
For Students
Vedclass Test Series
Mock tests in real JEE/NEET style with performance analysis. 5-day free trial.
Start Free TrialFor Teachers
Exam Paper Generator
Generate Set A/B/C/D exam papers from 7.5L+ questions in 2 minutes. 3 chapters free.
Try FreeFor Institutes
Online Exam Module
Live online exams with unlimited students, 360° analytics & white-label branding.
See Demo