This question has Statement –1 and Statement –2. 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.
Text Solution
Verified by ExpertsThe correct answer is:
D
d
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