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[" 1.The electrical eonductivity of a se...

[" 1.The electrical eonductivity of a semicondactor "],[" increases when electomaganetic radiation of "],[" wavelength shorter than "2480mm" is inclient on "],[" it.The band sap in (ev) for the semiconductor "],[" is "],[[" 1) "0.7eV," 2) "0.5eV],[" 3) "2.5eV," 4) "1.2eV]]

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