JEE Main 2013 — Communication System Question with Solution
JEE Main 2013 (23 Apr Online)
Question
Which of the following statement is NOT correct?
Choose an option
Show full solutionCorrect option: C
Correct answer
CElectromagnetic waves of frequencies higher than about cannot penetrate the ionosphere.
Step-by-step explanation
Above critical frequency , an electromagnetic wave penetrates the ionosphere and is not reflected by it.
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This is a previous-year question from JEE Main 2013, covering the Communication System chapter of Physics. PrepSharp catalogues every PYQ from JEE Main with a verified answer key and step-by-step solution prepared by IIT alumni — so you can search by chapter, topic or year and revise efficiently.