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Find the band gap energy when a light of wavelength 1240nm is incident on it.(a) 1eV(b) 2eV(c) 3eV(d) 4eVThis question was addressed to me during an interview.This interesting question is from Conductors in division Electric Fields in Material Space of Electromagnetic Theory

Answer»

Correct answer is (a) 1eV

The best explanation: The BAND GAP ENERGY in electron volt when WAVELENGTH is given is, Eg = 1.24(μm)/λ = 1.24 x 10^-6/1240 x 10^-9 = 1eV.



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