JEE Exam > JEE Questions > It is necessary to use satellites for long di...
Start Learning for Free
It is necessary to use satellites for long distance TV transmission because
- a)Television signals are absorbed by ionosphere
- b)Satellites transmit the signals all over the earth
- c)Television signals are attenuated by ionosphere
- d)Television signals are not properly reflected by the ionosphere. Therefore, reflection is effected by satellites.
Correct answer is option 'D'. Can you explain this answer?
Verified Answer
It is necessary to use satellites for long distance TV transmission be...
TV signals being of high frequency are not reflected by the ionosphere. Therefore, to reflect these signals, satellites are needed. That is why, satellites are used for long distance TV transmission.
Most long-distance shortwave (high frequency) radio communication—between 3 and 30 MHz—is a result of skywave propagation.
This 3-30 MHz is a range of frequencies which are used in sky waves propagation so that the ionosphere is capable of reflecting it.
Most long-distance shortwave (high frequency) radio communication—between 3 and 30 MHz—is a result of skywave propagation.
This 3-30 MHz is a range of frequencies which are used in sky waves propagation so that the ionosphere is capable of reflecting it.
Most Upvoted Answer
It is necessary to use satellites for long distance TV transmission be...
Explanation:
To understand why it is necessary to use satellites for long-distance TV transmission, we need to consider the characteristics of television signals and the role of the ionosphere.
The Ionosphere and Television Signals:
The ionosphere is a layer of the Earth's atmosphere that contains a high concentration of ions and free electrons. It extends from about 50 to 600 kilometers above the Earth's surface. The ionosphere plays a crucial role in the propagation of radio waves, including television signals.
Television Signal Attenuation:
Attenuation refers to the reduction in signal strength as it travels through a medium. In the case of television signals, they experience attenuation when passing through the ionosphere. This attenuation occurs due to the absorption of the signal by the ions and free electrons present in the ionosphere.
Television Signal Reflection:
Reflection refers to the bouncing back of a signal when it encounters a boundary between two different mediums. In the case of television signals, they can be reflected by the ionosphere back towards the Earth's surface. However, this reflection is not always efficient or reliable due to the characteristics of the ionosphere.
Rationale for Satellite Transmission:
Given the limitations of signal attenuation and reflection by the ionosphere, satellites provide an effective solution for long-distance TV transmission. Here's why:
1. Bypassing the Ionosphere: Satellites are positioned in space above the Earth's surface, eliminating the need for signals to pass through the ionosphere. This bypasses the attenuation caused by the ionosphere, allowing for a stronger and more reliable transmission.
2. Direct Line of Sight: Satellites transmit TV signals directly to receiving antennas on the ground. This direct line of sight avoids the uncertainties and inefficiencies of signal reflection by the ionosphere.
3. Global Coverage: Satellites can transmit signals over a wide coverage area, including remote or inaccessible regions. Since satellites orbit the Earth, they can reach any location with a clear view of the sky, providing global coverage for TV transmission.
4. Signal Amplification: Satellites can amplify TV signals before transmitting them to the ground, compensating for any loss of signal strength that may have occurred during transmission from the source.
Conclusion:
In summary, the use of satellites for long-distance TV transmission is necessary because television signals experience attenuation and unreliable reflection when passing through the ionosphere. Satellites provide a direct and reliable transmission path, bypassing the ionosphere and ensuring global coverage for television broadcasting.
To understand why it is necessary to use satellites for long-distance TV transmission, we need to consider the characteristics of television signals and the role of the ionosphere.
The Ionosphere and Television Signals:
The ionosphere is a layer of the Earth's atmosphere that contains a high concentration of ions and free electrons. It extends from about 50 to 600 kilometers above the Earth's surface. The ionosphere plays a crucial role in the propagation of radio waves, including television signals.
Television Signal Attenuation:
Attenuation refers to the reduction in signal strength as it travels through a medium. In the case of television signals, they experience attenuation when passing through the ionosphere. This attenuation occurs due to the absorption of the signal by the ions and free electrons present in the ionosphere.
Television Signal Reflection:
Reflection refers to the bouncing back of a signal when it encounters a boundary between two different mediums. In the case of television signals, they can be reflected by the ionosphere back towards the Earth's surface. However, this reflection is not always efficient or reliable due to the characteristics of the ionosphere.
Rationale for Satellite Transmission:
Given the limitations of signal attenuation and reflection by the ionosphere, satellites provide an effective solution for long-distance TV transmission. Here's why:
1. Bypassing the Ionosphere: Satellites are positioned in space above the Earth's surface, eliminating the need for signals to pass through the ionosphere. This bypasses the attenuation caused by the ionosphere, allowing for a stronger and more reliable transmission.
2. Direct Line of Sight: Satellites transmit TV signals directly to receiving antennas on the ground. This direct line of sight avoids the uncertainties and inefficiencies of signal reflection by the ionosphere.
3. Global Coverage: Satellites can transmit signals over a wide coverage area, including remote or inaccessible regions. Since satellites orbit the Earth, they can reach any location with a clear view of the sky, providing global coverage for TV transmission.
4. Signal Amplification: Satellites can amplify TV signals before transmitting them to the ground, compensating for any loss of signal strength that may have occurred during transmission from the source.
Conclusion:
In summary, the use of satellites for long-distance TV transmission is necessary because television signals experience attenuation and unreliable reflection when passing through the ionosphere. Satellites provide a direct and reliable transmission path, bypassing the ionosphere and ensuring global coverage for television broadcasting.
|
Explore Courses for JEE exam
|
|
Similar JEE Doubts
Top Courses for JEEView all
It is necessary to use satellites for long distance TV transmission becausea)Television signals are absorbed by ionosphereb)Satellites transmit the signals all over the earthc)Television signals are attenuated by ionosphered)Television signals are not properly reflected by the ionosphere. Therefore, reflection is effected by satellites.Correct answer is option 'D'. Can you explain this answer?
Question Description
It is necessary to use satellites for long distance TV transmission becausea)Television signals are absorbed by ionosphereb)Satellites transmit the signals all over the earthc)Television signals are attenuated by ionosphered)Television signals are not properly reflected by the ionosphere. Therefore, reflection is effected by satellites.Correct answer is option 'D'. Can you explain this answer? for JEE 2025 is part of JEE preparation. The Question and answers have been prepared according to the JEE exam syllabus. Information about It is necessary to use satellites for long distance TV transmission becausea)Television signals are absorbed by ionosphereb)Satellites transmit the signals all over the earthc)Television signals are attenuated by ionosphered)Television signals are not properly reflected by the ionosphere. Therefore, reflection is effected by satellites.Correct answer is option 'D'. Can you explain this answer? covers all topics & solutions for JEE 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for It is necessary to use satellites for long distance TV transmission becausea)Television signals are absorbed by ionosphereb)Satellites transmit the signals all over the earthc)Television signals are attenuated by ionosphered)Television signals are not properly reflected by the ionosphere. Therefore, reflection is effected by satellites.Correct answer is option 'D'. Can you explain this answer?.
It is necessary to use satellites for long distance TV transmission becausea)Television signals are absorbed by ionosphereb)Satellites transmit the signals all over the earthc)Television signals are attenuated by ionosphered)Television signals are not properly reflected by the ionosphere. Therefore, reflection is effected by satellites.Correct answer is option 'D'. Can you explain this answer? for JEE 2025 is part of JEE preparation. The Question and answers have been prepared according to the JEE exam syllabus. Information about It is necessary to use satellites for long distance TV transmission becausea)Television signals are absorbed by ionosphereb)Satellites transmit the signals all over the earthc)Television signals are attenuated by ionosphered)Television signals are not properly reflected by the ionosphere. Therefore, reflection is effected by satellites.Correct answer is option 'D'. Can you explain this answer? covers all topics & solutions for JEE 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for It is necessary to use satellites for long distance TV transmission becausea)Television signals are absorbed by ionosphereb)Satellites transmit the signals all over the earthc)Television signals are attenuated by ionosphered)Television signals are not properly reflected by the ionosphere. Therefore, reflection is effected by satellites.Correct answer is option 'D'. Can you explain this answer?.
Solutions for It is necessary to use satellites for long distance TV transmission becausea)Television signals are absorbed by ionosphereb)Satellites transmit the signals all over the earthc)Television signals are attenuated by ionosphered)Television signals are not properly reflected by the ionosphere. Therefore, reflection is effected by satellites.Correct answer is option 'D'. Can you explain this answer? in English & in Hindi are available as part of our courses for JEE.
Download more important topics, notes, lectures and mock test series for JEE Exam by signing up for free.
Here you can find the meaning of It is necessary to use satellites for long distance TV transmission becausea)Television signals are absorbed by ionosphereb)Satellites transmit the signals all over the earthc)Television signals are attenuated by ionosphered)Television signals are not properly reflected by the ionosphere. Therefore, reflection is effected by satellites.Correct answer is option 'D'. Can you explain this answer? defined & explained in the simplest way possible. Besides giving the explanation of
It is necessary to use satellites for long distance TV transmission becausea)Television signals are absorbed by ionosphereb)Satellites transmit the signals all over the earthc)Television signals are attenuated by ionosphered)Television signals are not properly reflected by the ionosphere. Therefore, reflection is effected by satellites.Correct answer is option 'D'. Can you explain this answer?, a detailed solution for It is necessary to use satellites for long distance TV transmission becausea)Television signals are absorbed by ionosphereb)Satellites transmit the signals all over the earthc)Television signals are attenuated by ionosphered)Television signals are not properly reflected by the ionosphere. Therefore, reflection is effected by satellites.Correct answer is option 'D'. Can you explain this answer? has been provided alongside types of It is necessary to use satellites for long distance TV transmission becausea)Television signals are absorbed by ionosphereb)Satellites transmit the signals all over the earthc)Television signals are attenuated by ionosphered)Television signals are not properly reflected by the ionosphere. Therefore, reflection is effected by satellites.Correct answer is option 'D'. Can you explain this answer? theory, EduRev gives you an
ample number of questions to practice It is necessary to use satellites for long distance TV transmission becausea)Television signals are absorbed by ionosphereb)Satellites transmit the signals all over the earthc)Television signals are attenuated by ionosphered)Television signals are not properly reflected by the ionosphere. Therefore, reflection is effected by satellites.Correct answer is option 'D'. Can you explain this answer? tests, examples and also practice JEE tests.
|
|
Explore Courses for JEE exam
|
|
Signup for Free!
Signup to see your scores go up within 7 days! Learn & Practice with 1000+ FREE Notes, Videos & Tests.
|
© EduRev
|
Education Revolution
|
|
Signup to see your scores
go up within 7 days!
Access 1000+ FREE Docs, Videos and Tests
Takes less than 10 seconds to signup