Problem

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 most appropriate mode of communication? a.

A

is transmitted *via* space wave while

B

and

C

transmitted *via* sky wave. b.

A

is transmitted *via* ground wave,

B

*via* sky wave and

C

*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.

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