Question:
An EM wave radiates outwards from a dipole antenna, with E0 as the amplitude of its electric field vector. The electric field E0 which transports significant energy from the source falls off as
(a) 1/r3
(b) 1/r2
(c) 1/r
(d) remains constant
Solution:
(c) 1/r
Click here to get exam-ready with eSaral
For making your preparation journey smoother of JEE, NEET and Class 8 to 10, grab our app now.