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in Physics by (38.0k points)
`A`: It is necessary for transmitting antenna must be at same height as that of receiving antenna for line of sight communition. `B`: `EM` waves of frequency beyond `40 MHz`, propagate as space waves.
A. both `A`and `B` are correct
B. both `A` and `B` are wrong
C. only `A` is correct
D. only `B` is correct

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1 Answer

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by (37.8k points)
Correct Answer - D

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