Q.

A satellite in a polar orbit goes around the earth in about__?


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a

1 hour    

b

2 hours    

c

3 hours    

d

½ hour 

answer is B.

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Detailed Solution

A satellite in a polar orbit goes around the Earth in about 2 hours.
Polar orbits are used to describe satellites that pass over the Earth's poles. The polar orbit is 1000 kilometres above the Earth's surface. A satellite in polar orbit has a time period of fewer than two hours, so it can make several rounds in a day.
Many of NASA's Earth Observing System satellites have nearly polar orbits. The satellite moves around the Earth from pole to pole in this highly inclined orbit, which takes about 99 minutes to complete.
  
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