In communication with the help of an antenna, | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(A) The range $r$ of an antenna is given by the formula $r = \sqrt{2hR}$,where $h$ is the height of the antenna and $R$ is the radius of the Earth.Ini

Vedclass · Accepted Answer

$\sqrt{2} r$

Vedclass · Answer

(A) The range $r$ of an antenna is given by the formula $r = \sqrt{2hR}$,where $h$ is the height of the antenna and $R$ is the radius of the Earth.Initially,the range is $r = \sqrt{2hR}$.If the height is doubled,the new height becomes $h' = 2h$.The new range $r'$ is given by $r' = \sqrt{2h'R}$.Substituting $h' = 2h$ into the equation,we get $r' = \sqrt{2(2h)R} = \sqrt{2} \cdot \sqrt{2hR}$.Since $r = \sqrt{2hR}$,we have $r' = \sqrt{2} r$.

In communication with the help of an antenna,if the height is doubled,then the range covered,which was initially $r$,would become:

Similar Questions

In the case of amplitude modulation,to avoid distortion,the modulation index $(\mu)$ should be:

Television signals broadcast from the moon can be received on the earth,while the $TV$ broadcast from Delhi cannot be received at places about $100 \, km$ distant from Delhi. This is because:

In a modulation process where the pulse duration varies with the modulating signal,it is called ......

What is the frequency range of signals that can be transmitted using a $Twisted\, pair\, wire$?

An antenna is a device:

Vedclass Test Series

Exam Paper Generator

Online Exam Module