Television signals broadcast from the moon ca | vedclass

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

Question

(C) Television signals are radio waves that propagate in a straight line (line-of-sight propagation). They cannot pass through the Earth's surface. Wh

Vedclass · Accepted Answer

$TV$ signals travel straight and cannot follow the curvature of the earth

Vedclass · Answer

(C) Television signals are radio waves that propagate in a straight line (line-of-sight propagation). They cannot pass through the Earth's surface. When waves travel in a straight line from a terrestrial transmitter,they are blocked by the curvature of the Earth beyond a certain distance. However,when signals are broadcast from the moon,they approach the Earth from a high altitude,allowing them to cover a much larger area without being obstructed by the Earth's curvature. This is why high-altitude towers are used for terrestrial broadcasting to extend the range of signal reception.

List-$I$	List-$II$
$A$. Television signal	$I$. $03\,KHz$
$B$. Radio signal	$II$. $20\,KHz$
$C$. High Quality Music	$III$. $02\,MHz$
$D$. Human speech	$IV$. $06\,MHz$

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:

Similar Questions

An amplitude modulated wave is represented by $c_m(t)= 10[1+0.6 \sin (1250 t)] \sin (10^8 t)$. Then the modulation index is

Match List-$I$ with List-$II$:

List-$I$ List-$II$

$A$. Television signal $I$. $03\,KHz$

$B$. Radio signal $II$. $20\,KHz$

$C$. High Quality Music $III$. $02\,MHz$

$D$. Human speech $IV$. $06\,MHz$

Choose the correct answer from the options given below:

For $100\%$ modulation,what should be the value of the minimum amplitude $(E_{min})$ of the modulated wave?

For transmitting a signal of frequency $1 \text{ kHz}$,the wavelength of the wave should be:

The bit rate for a signal,which has a sampling rate of $8 \, kHz$ and where $16$ quantisation levels have been used,is ......... $bits/sec$.

Vedclass Test Series

Exam Paper Generator

Online Exam Module