Question

arrange the following communication methods / modes in descending order on the basis of their operating frequency.
1 .AM radio transmission
2.cellular communication
3.sky wave propagation
4.satellite communication
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Answer 1

Answer:

Satellite communication>Sky communication>cellular communication>AM radio Transmission.

Explanation:

Explanation is clearly provided in class 12 NCERT textbook.

Answer 2

Answer:

satellite communication > cellular communication > sky wave propagation > AM radio transmission