Question

Three waves A,B and C of frequencies 1600 kHz, 5 MHz and 60 MHz, respectively are to be transmitted from one place to another.Which of the following is the appropriate mode of communication?
A. A is transmitted via space wave while B and C are transmitted via sky wave
B. A is transmitted via ground wave while B and C are transmitted via space wave
C. B and C are transmitted via ground wave while A is transmitted via sky wave
D. B is transmitted via ground wave while A and C are transmitted via space wave

Answer 1

Correct Answer - B
For ground wave , ` f lt 2 MHz `
For sky waves , ` 2MHz lt f lt 30MHz `
For space wave , `f gt 30 MHz `