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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 - Exercises [पृष्ठ १४४]

संबंधित प्रश्‍न

Fill in the blank and explain the statement with reasoning:

 If the height of the orbit of a satellite from the earth surface is increased, the tangential velocity of the satellite will ...... 


Complete the following table.


Considering first correlation, complete the second.
Hubble telescope : At 569 km above the earth’s surface
Orbit of Hubble telescope : .............................


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


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


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.


Note the relationship between the entries in all the three columns in the table and rewrite the table.

Column-1
(Location)
Column-2
Height from the earth’s surface (km)
Column-3
g (m/s2)
Earth’s surface (average) 8.8 0.225
Mount Everest 36.6 9.81
Maximum height ever reached by manmade balloon 400 9.8
Orbit of a typical weather satellite 35700 9.77
Orbit of communication satellite 0 8.7

Write a note on orbital velocity


How is a satellite maintained in nearly circular orbit?


Numerical problem.

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


What is microgravity?


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.


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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