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. |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyThe 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)
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyWhich 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. |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & Biology