A) the refractive index of the ionosphere becomes very high for \[f>{{f}_{c}}\]
B) the refractive index of the ionosphere becomes very low for \[f>{{f}_{c}}\]
C) the refractive index of the ionosphere very high for \[f<{{f}_{c}}\]
D) none of the above
Correct Answer: A
Solution :
[a] For total internal reflection of sky waves, the refractive index of the ionosphere Should be less If \[f>{{f}_{c}},\] the refractive index will increase. By this waves will just pass without reflection taking place.You need to login to perform this action.
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