Statement I: Sky wave suffers total internal reflection in ionosphere, whereas space wave directly penetrates the ionosphere and advances towards higher altitude. Statement II: Frequency of sky wave is less than that of space wave. As frequency decreases, the refractive indices of the layers of ionosphere also go down below the refractive index of air.

Statement I: Sky wave suffers total internal reflection in ionosphere,

1.	Statement I: Sky wave suffers total internal reflection in ionosphere, whereas space wave directly penetrates the ionosphere and advances towards higher altitude. Statement II: Frequency of sky wave is less than that of space wave. As frequency decreases, the refractive indices of the layers of ionosphere also go down below the refractive index of air.
Answer» STATEMENT I is TRUE, statement II is true, statement II is a correct EXPLANATION for statement I. Statement I is true, statement II is true, statement II is not a correct explanation for statement I. Statement I is true, statement II is false. Statement I is false, statement II is true. Solution :N/A

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