Answered: What will be the critical frequency

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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What will be the critical frequency of the ionosphere if the maximum electron density is 2.11x10¹¹/m³?

Expert Solution

Step 1 To Determine , Critical frequency of ionosphere when maximum electron density is given .

Critical frequency is a frequency above which a wave will not get reflected by ionosphere and will penetrate into it .It is given as ,

$f_{c} = 9 \sqrt{N_{m a x}}$ where $N_{m a x}$ is Maximum Electron density .

$\Rightarrow f_{c} = 9 \sqrt{2.11 \times 10^{11} / m^{3}} \Rightarrow f_{c} = 9 \times 4.59 \times 10^{5} H z \Rightarrow f_{c} = 4.134 \times 10^{6} H z$

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