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Solved Problems-5

Problem-5
Calculate the critical frequencies for the F1F2 and E layers for which the maximum ionic densities are 2.3 × 106, 3.5 × 106 and 1.7 × 106 electrons per c.c. respectively.
Solution
For the F1 layer, Nmax = 2.3 × 106 cm-3 = 2.3 × 106 × 106 m-3 = 2.3 × 1012 m-3
 
So, the critical frequency, Description: Description: 29834.png
 
For the F2 layer, Nmax = 3.5 × 106 cm-3 = 3.5 × 106 × 106 m-3 = 3.5 × 1012 m-3
 
So, the critical frequency, Description: Description: 29827.png
 
For the E layer, Nmax = 1.7 × 106 cm-3 = 1.7 × 106 × 106 m-3 = 1.7 × 1012 m-3
 
So, the critical frequency, Description: Description: 29820.png 
 





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