The electrical conductivity of a semiconductor increases when e.m . Radiation of wavelength shorter than 2480 nm is incident on it . The band gap in (eV) for semiconductor is :

The electrical conductivity of a semiconductor increases when e.m . Ra

1.	The electrical conductivity of a semiconductor increases when e.m . Radiation of wavelength shorter than 2480 nm is incident on it . The band gap in (eV) for semiconductor is :
Answer» 0.5 0.7 1.1 2.5 Solution :Band gap = energy of photon `=(hc)/LAMDA=(6.62xx10^(-34)xx10^8)/(2480xx10^(-9)xx1.6xx10^(-9))~~0.5eV`

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The electrical conductivity of a semiconductor increases when e.m . Radiation of wavelength shorter than 2480 nm is incident on it . The band gap in (eV) for semiconductor is :

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