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JEE Main202225 Jul 2022Morning ShiftPhysicsSemiconductorsActual

The energy band gap of semiconducting material to produce violet (wavelength = 4000 Å ) LED is _____ eV . (Round off to the nearest integer).

Correct answer

0

Step-by-step solution

Energy gap of semiconducting material E g = h c λ = 1242 λ nm = 1242 400 = 3 . 105 Answer rounded to 3 eV .

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