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Calculate the phase velocity of electromagnetic wavehaving electron density and frequency for D layer, N=400 electron/cc, v=300 kHzA. `3xx10^(8)m//s`B. `3-75xx10^(8) m//s`C. `6.8xx10^(8)m//s`D. `1.1xx10^(9)m//s` |
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Answer» `mu=sqrt(1-(81.45N)/(v^(2))=sqrt(1-(81.45xx400xx10^(6))/((300xx10^(3))^(2))` `=0.80` Phase velocity, `v=(c)/(mu)= (3xx10^(8))/(0.8)=3.75xx10^(8)m//s` |
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