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Calculate the phase velocity of electrom...

Calculate the phase velocity of electromagnetic wave having electromagnetic density and frequency for D layer, `N=400 "electron"//cm^(3), v=300kHz`

A

`3xx10^(8) ms_(1)`

B

`3.75xx10^(8) ms^(-1)`

C

`6.8xx10^(8) ms^(-1)`

D

`1.1xx10^(9) ms^(-1)`

Text Solution

Verified by Experts

The correct Answer is:
b
`mu=sqrt(1-(80.6N)/(v^(2)))~~0.80`
Again, `v(c)/(mu)`
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