An electromagnetic wave of frequency \( 3 \mathrm{GHz} \) P enters ...

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An electromagnetic wave of frequency \( 3 \mathrm{GHz} \)
P
enters a dielectric medium of relative electric
W
permittivity 2.25 from vacuum. The wavelength of this wave in that medium will be \( \times 10^{-2} \mathrm{~cm} \).
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