JEE Main 2011 — Communication System Question with Solution
JEE Main 2011
Question
This question has Statement and Statement . Of the four choices given after the statements, choose the one that best describes the two statements.
Statement-1 : Sky wave signals are used for long distance radio communication. These signals are in general, less stable than ground wave signals.
Statement-2 : The state of ionosphere varies from hour to hour, day to day and season to season.
Choose an option
Show full solutionCorrect option: A
Correct answer
AStatement-1 is true, Statement-2 is true; Statement-2 is the correct explanation of Statement-1.
Step-by-step explanation
Since ionospheric properties change with time, these signals are in general less stable than ground wave signals.
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This is a previous-year question from JEE Main 2011, 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.