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Q. No.Satellites orbiting the earth have a finite life and sometimes debris of satellites fall to the earth. This is because:
| 1. | the solar cells and batteries in satellites run out. |
| 2. | the laws of gravitation predict a trajectory spiralling inwards. |
| 3. | of viscous forces causing the speed of the satellite and hence height to gradually decrease. |
| 4. | of collisions with other satellites. |
Subtopic: Satellite |
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The following are the given statements:
| a. | A polar satellite goes around the earth’s pole in the north-south direction. |
| b. | A geostationary satellite goes around the earth in the east-west direction. |
| c. | A geostationary satellite goes around the earth in the west-east direction. |
| d. | A polar satellite goes around the earth in the east-west direction. |
Choose the correct alternatives:
1. (a, c)
2. (a, d)
3. (b, c, d)
4. (a, c, d)
Subtopic: Satellite |
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Which of the following are true?
| 1. | a polar satellite goes around the Earth's pole in West-East direction. |
| 2. | a geostationary satellite goes around the Earth in East-West direction. |
| 3. | a geostationary satellite goes around the Earth in West-East direction. |
| 4. | a polar satellite goes around the Earth in East-West direction. |
Subtopic: Satellite |
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Satellites orbiting the earth have finite life and sometimes debris of satellites fall to the earth. This is because:
| 1. | the solar cells and batteries in satellites run out. |
| 2. | the laws of gravitation predict a trajectory spiraling inwards. |
| 3. | of viscous forces causing the speed of the satellite and hence height to gradually decrease. |
| 4. | of collisions with other satellites. |
Subtopic: Satellite |
From NCERT
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Which of the following are true?
1. A polar satellite goes around the earth’s pole in northsouth direction.
2. A geostationary satellite goes around the earth in east-west direction.
3. A geostationary satellite goes around the earth in west-east direction.
4. A polar satellite goes around the earth in east-west direction.
Choose the correct option:
1. (a), (d)
2. (b), (c), (d)
3. (a), (b), (c)
4. (a), (c)
1. A polar satellite goes around the earth’s pole in northsouth direction.
2. A geostationary satellite goes around the earth in east-west direction.
3. A geostationary satellite goes around the earth in west-east direction.
4. A polar satellite goes around the earth in east-west direction.
Choose the correct option:
1. (a), (d)
2. (b), (c), (d)
3. (a), (b), (c)
4. (a), (c)
Subtopic: Satellite |
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