The electrical conductivity of a semicon...

The electrical conductivity of a semiconductor increases when electromagnetic radiation of wavelength shorter than 2480 nm is incident on it. Find the band gap of the semiconductor. Given : h=6. `63xx10 ^(-34)J-S , C=3.0xx10^(8) ms^(-1)` - and leV=`1.6x10^(-19)J`.

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0.5eV

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