| 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. [AIEEE 2011] |
A) Statement-1 is false, Statement-2 is true
B) Statement-1 is true, Statement-2 is false
C) Statement-1 is true, Statement-2 is true and Statement-2 is the correct explanation of Statement-1
D) Statement-1 is true, Statement-2 is true and Statement-2 is not the correct explanation of Statement-1
Correct Answer: C
Solution :
[c] Because of variation in composition of ionosphere, the signals are unstable.
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