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(a) A non-magnetic conductor has a plasma frequency of lev and a damping frequency of 0.01eV. What values of relative real and imaginary permittivity are

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(a) A non-magnetic conductor has a plasma frequency of lev and a damping frequency of 0.01eV. What values of relative real and imaginary permittivity are predicted by the Drude model at a frequency of 0.2eV? [3 marks] (b) How much light of this frequency would consequently be internally transmitted through 100nm of this material? [3 marks]

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