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महाराष्ट्र राज्य शिक्षण मंडळएस.एस.सी (इंग्रजी माध्यम) इयत्ता १० वी

Why are geostationary satellites not useful for studies of polar regions?

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प्रश्न

Why are geostationary satellites not useful for studies of polar regions?

Give scientific reasons:

The geostationary satellites are not useful for studies of polar regions.

कारण सांगा
दीर्घउत्तर
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उत्तर

  1. The orbit of a geostationary satellite is above the equator. 
  2. The time of revolution for the earth around itself and that for geostationary satellites to revolve around the earth are the same.
  3. The polar regions lie at very high latitudes and are outside the field of view of satellites positioned above the equator, so they cannot be properly observed.
  4. These satellites are stationary with reference to the Earth they can observe a specific portion of the Earth continuously. 

Therefore, geostationary satellites are not useful for studies of polar regions.

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पाठ 10: Space Missions - Exercise [पृष्ठ १४४]

संबंधित प्रश्‍न

Complete the following table.


Mahendra and Virat are sitting at a distance of 1 metre from each other. Their masses are 75 kg and 80 kg respectively. What is the gravitational force between them? G = 6.67 x 10-11 Nm2/kg


Write the proper name of the orbits of satellites shown in the following figure with their height from the earth’s surface.


Name the first artificial satellite sent by Russia in space.


A group of students from COEP Pune sent a small satellite _______ through ISRO in 2016.


The function of a satellite launcher is based on Newton's second law of motion.


Calculate the critical velocity of the satellite to be located at 35780 km above the surface of earth.


Distinguish between:

High Earth orbit - Medium Earth orbit.


Observe the figure and write the answers.

  1. Name the outer orbit.
  2. Which satellites revolve in low earth orbits?
  3. Which various orbits are given in the figure?
  4. Give an example of a launch vehicle based on Newton’s third law.

Write functions of Military satellite and Navigational satellite.


Numerical problem.

At an orbital height of 400 km, find the orbital period of the satellite.


Geostationary satellites are not useful for studies of the polar region.


Calculate the time taken by a satellite for one revolution revolving at a height of 6400 km above the earth's surface with a velocity of 5.6 km/s.


Write the name of small satellite made by a group of students from COEP (College of Engineering, Pune) sent to the space through ISRO in 2016.


Complete the Following table.

Sr. no. Type of Satellite The names of Indian Satellite and launcher
(1) Navigational Satellite Satellite: ______
Launcher: ______
(2) Earth Observation Satellite Satellite: ______
Launcher: ______

The orbit of a satellite is exactly 35780 km above the earth's surface and its tangential velocity is 3.08 km/s.

How much time the satellite will take to complete one revolution around the earth?

(Radius of earth = 6400 km.)


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