Question: Observation point A and observation point B are far enough from an antenna for the antenna to appear as a point source of electromagnetic energy.

Observation point A and observation point B are far enough from an antenna for the antenna to appear as a point source of electromagnetic energy. The two observation points and the antenna may be considered to be along a straight line. Ignore the effects of any other objects.
P= total power transmitted by the antenna
Distance between the antenna and observation point A=d
Distance between the antenna and observation point B=5d
Which one is the correct statement?
Observation point A and observation point B are

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