Theory of Intelligence
11TH•Physics•Waves And Vibrations•Question 8

Solution

A radio antenna broadcasts $500$ watts of power. If the signal is received at a distance of $10\,\mathrm{km}$, what is the intensity of the signal?

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Solution

4×10−7 W m−24 \times 10^{-7}\,\mathrm{W\,m^{-2}}

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