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A point source of 2 watt is radiating un...

A point source of 2 watt is radiating uniformly in all direction in vacuum. Find the amplitude of electric field at a distance 2m from it-

A

`3xx10^(-4)`

B

`sqrt(30)`

C

`sqrt(3)xx10^(-4)`

D

`sqrt(3) xx10^(-2)`

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