Questions
On certain day, it is observed that the signals of higher than 5 MHz are not received by reflection, from layer of ionic sphere. The approximate maximum electron density of layer on the day is
detailed solution
Correct option is D
Critical Frequency : fC=9N ⇒ 5×106=9N ⇒25×1012=81 N ⇒ N=25×101281 =250×101181=3×1011/m3Talk to our academic expert!
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