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NEET UG PHYSICS MCQ: ALTERNATING CURRENT

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Application +4 | -1

The intensity of EMW at a distance of 1 km from a source of power 12.56 KW is

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Correct option: A

{10^{ - 3}}\,w{m^2}

Option A (

{10^{ - 3}}\,w{m^2}

) is correct because intensity is power per unit area, and the area is the surface area of a sphere with radius 1 km.

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