In space communication, the sound waves can be sent from one place to another:
A. through space
B. through wires
C. by superimposing it on undamped electro-magnetic waves
D. by superimposing it on damped electro-magnetic waves
Answer:C
In space communication, the sound waves can be sent from one place to another:
A. through space B. through wires C. by superimposing it on undamped electro-magnetic waves D. by superimposing it on damped electro-magnetic waves