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How does wave intensity depends on the distance from source

How does wave intensity depends on the distance from source
 

Grade:12th pass

1 Answers

Umakant biswal
5359 Points
4 years ago
if the wave travels in a circle, with an initial energy of P ( linked directly to wave "intensity" ), The wave energy at a distance r from the initial point is kP/r², k being a constant. 
Waves can obsorbed by electrons so there is less waves so its less intense. We know this is true because in a vacuum they remain at lot more constant. More eletrons between source means more waves being obsorbed. 
HOPE IT CLEARS 
 

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