ction takes place at a height of 400km and that the maximum destiny in the  ionosphere corresponds to a 0.9 refractive index at 10MHz. What will be the range (assume earth is  flat) for which the MUF is 10MHz.

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Chapter16: Electromagnetic Waves
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Assume that reflection takes place at a height of 400km and that the maximum destiny in the 
ionosphere corresponds to a 0.9 refractive index at 10MHz. What will be the range (assume earth is 
flat) for which the MUF is 10MHz. 

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