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At large distances from source barE and...

At large distances from source `barE` and `barB` are in phase and the decrease in their magnitude is comparitively slower with distance r as per________

A

`r^(-1)`

B

`r`

C

`r^(-3)`

D

`r^2`

Text Solution

Verified by Experts

The correct Answer is:
A
For the point source
`I = P/(4pir^2) =1/2 epsi E^2 C`
`implies E prop 1/r`
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