Question

7 to 8 uses of radio.( means of communication)

Answer 1

hii friend here is your answer..........
radio is a strong and powerful tool of communication. this is a mode which sends signals in the form of invisible electromagnetic waves from one place to another.this is a good mode of entertainment,live commentary of sports,news, music programs etc. with the help of radio communication police van,fire brigade, aeroplane pilot, astronaut, ship commander contact with each other.........
hope it will help you..........
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Answer 2

These are the following uses:-
1. Early uses were maritime, for sending telegraphic messages using Morse code between ships and land.
2.Radio was used to pass on orders and communications between armies and navies.
3. radio takes many forms, including wireless networks and mobile communications of all types, as well as radio broadcasting.
4.Another use of radio in the pre-war years was the development of detection and locating of aircraft and ships by the use of radar.
5. Radio was unique among methods of dramatic presentation in that it used only sound.
Hope this will help u.