A layer of atmosphere that reflects medium frequency radio waves which is ineffective during night is
A
layer
B
Stratosphere
C
E layer
D
Thermosphere
Text Solution
Verified by ExpertsThe correct answer is:
C
: E-layer is at a virtual height of 
from the surface of earth. This layer exists during day time but disappears at night. The critical frequency of this layer is about 
and reflects medium frequency radio waves ( 
to 
).
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