When electromagnetic waves enter the ionised layer of ionosphere, then the relative permittivity i.e. dielectric constant of the ionised layer
A. does not change
B. appears to increase
C. appears to decrease
D. sometimes appears to increase and sometimes to decrease
Answer:A
When electromagnetic waves enter the ionised layer of ionosphere, then the relative permittivity i.e. dielectric constant of the ionised layer
A. does not change B. appears to increase C. appears to decrease D. sometimes appears to increase and sometimes to decrease