The electrical conductivity of a semicon...

The electrical conductivity of a semiconductor increases when electromagnatic radiation of wavelength shorter than 2480 nm is incident on it. Find the band gap of the semiconductor. Given `h=6.63xx10^(-34)Js, and 1eV=1.6xx10^(-19)J`.

0.75 eV

0.05 eV

1.5 eV

0.5 eV

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