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The electrical conductivity of a semiconductor increases when electromagnetic radiation of wavelength shorter than 2480 nm is incident on it. The band gap (in eV) for the semiconductor is : |
0.9 0.7 0.5 1.1 |
0.5 |
$ \text{Band Gap } \Delta E = \frac{hc}{\lambda} = \frac{1240 eV}{2480} = 0.5eV$ |
