Three waves A,B and C of frequencies 1500 KHz. 6MHz and 50 MHz respectively are to be transmitted from one place to another. Which of the following is the most appropriate mode of communciation?

Options

A. A is transmitted via space wave while B and C are transmitted via sky wave
B. A is transmitted via ground wave, B via sky wave and C via space wave
C. B and C tranmitted via ground wave while A is trasnmitted via sky wave
D. B is transmitted via ground wave while A and C are transmitted via space wave

Answer

B

Explanation

For ground wave propagation , the frequency range is 530kHz to 1710 kHz. For sky wave propagation wave progation the frequency range is 54 MHz to 4.2 GHz. Thus option (b) is true.