Question

For a radio transmission, radio wave reaching the ionized medium:

• A. will bend away from normal.
• B. will bend towards normal.
• C. will bend follow a straight-path.
• D. None of the above.

Answer 1

Answer: (A)

will bend away from normal.

Radio wave enters from an un-ionised medium to an ionised medium, the wave incident on the boundary of the medium deviates from its straight path, i.e., will bend away from normal because ionised medium behaves as a rarer medium w.r.t. to un-ionised medium.