Please answer must be correct and from the source of choose

Last updated: 6/12/2023

Please answer must be correct and from the source of choose the correct answer of the following mcq questions with a short explanation as possible Subject Antennas and propagation Sources Antenna Theory Analysis and Design 3th 4th Edition material sheets link https drive google com file d 1BsAOAv7ihL3vrdEFIH1Nv8zySY7awbte view usp sharing 8 The refractive index n and refractivity N of air usually vary with height above ground as a both decrease with height c both increase with height b n decreases and N increases with height d none of these 167 Tamburl