1.

An EM wave radiates outwards from a dipole antenna, with E_(0) as the amplitude of its electric field vector. The electric field E_(0) which transports significant energy from the source falls off as

Answer»

`(1)/(r^(3))`
`(1)/(r^(2))`
`(1)/(r )`
remains constant

Solution :Electromagnetic waves EMITTED from dipole antenna PROPAGATE in outward direction in form of RAYS.
At very large DISTANCE amplitude of electromagnetic wave is inversely PROPORTIONAL to its distance from the source or antenna.


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