1.

Consider the following:1. Submarine Communications2. AM Radio3. Short Wave Radio4. RadarArrange the above in increasing frequency of the waves used in their applications.

A. 4 3 2 1
B. 1 2 3 4
C. 2 1 4 3
D. 2 3 4 1
Answer» C. 2 1 4 3


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