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Electromagnetic Field Theory - Engineering

Q1:

At a particular time it is observed that the frequencies of F layer at Delhi is 3 MHz the maximum electron density is

A 11 x 1010

B 1.1 x 1010

C 0.11 x 1010

D 11 x 1012

ANS:A - 11 x 1010

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fc = 9Nmax 3 x 106 = 9Nmax Nmax = 0.11 x 1012 11 x 1010/m3.