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Electronic Devices question

2024 · 9 Apr · Shift 1 · Q66
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Electronic Devices question

2024 · 9 Apr · Shift 1 · Q66

JEE MainPhysicsElectronic DevicesMCQ+4 / −1
A light emitting diode (LED) is fabricated using GaAs semiconducting material whose band gap is 1.42 eV1.42 \mathrm{~eV}1.42 eV. The wavelength of light emitted from the LED is :
  1. A
    1243 nm
  2. B
    875 nm
  3. C
    650 nm
  4. D
    1400 nm
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