Understanding communication and impact of mass media - class-XI
'Bombay samachar' was started in __________.
'Bombay Samachar' is the oldest continuously published newspaper in India. It is published in which language?
Which is not an example of mass media?
How does communication between satellite be achieved
The downlink frequency in the C-band transponder is about
How do you describe the complete signal path of the satellite communications operation?
The earth area covered by a satellite radio beam is
Which is an application of satellite system?
Which of the following is not advantage of satellite communication?
In which of the following communication methods, the transmitted and receiving antennas can be oriented in any direction?
Match List-1 with List-2.
List-1 | List-2 |
---|---|
a. Point to point communication | e. RADAR |
b. broadcast communication | f. AM radio |
c. Line of sight | g. FM radio communication |
d. Satellite communication | h. Traditional telephony |
i. Mobile telephony | |
j. TV |
The frequency of transmission of a ratio station is $30\, MHz$. The wavelength of the waves transmitted by the centre will be-
Long range transmission of TV-signal is done by
What fraction of the surface area of earth can be covered to establish communication by one geostationary satellite?
A ground receiver station is receiving a signal at (a) 5 MHz and (b) 100MHz, transmitted from a ground transmitter at a height of 400m located at a distance of 125km. Identify whether it is coming via space wave or sky wave propagation or satellite transponder. Radius of earth = $6.4\times { 10 }^{ 6 }m$; maximum number density of electrons in ionosphere = ${ 10 }^{ 12 }{ m }^{ -3 }$