(A) : Sky wave signal are used for long distance radio communication. These signals are in general, less stable than ground wave signals. (R) :The state of ionosphere varies from hour to hour, day to day and season to season.

(A) : Sky wave signal are used for long distance radio communication.

1.	(A) : Sky wave signal are used for long distance radio communication. These signals are in general, less stable than ground wave signals. (R) :The state of ionosphere varies from hour to hour, day to day and season to season.
Answer» Both 'A' and 'R' are TRUE and 'R' is the correct EXPLANATION of 'A'. Both 'A' and 'R' are true and 'R' isnot the correct explanation of 'A'. A' is true ABD 'R' false A' is false and 'R' is false ANSWER :A

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(A) : Sky wave signal are used for long distance radio communication. These signals are in general, less stable than ground wave signals. (R) :The state of ionosphere varies from hour to hour, day to day and season to season.

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