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Electronic Devices question

2022 · 25 Jul · Shift 1 · Q68
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Electronic Devices question

2022 · 25 Jul · Shift 1 · Q68

JEE MainPhysicsElectronic DevicesNumerical+4 / −1
The energy band gap of semiconducting material to produce violet (wavelength = 4000 Ao\mathop A\limits^oAo​) LED is ‾\underline{\hspace{2cm}}​eV\mathrm{eV}eV. (Round off to the nearest integer).
Numerical answer
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