Satellites used for telecommunication relay are kept in a geostationary orbit A satellite is said to...........

Science and Technology (Easy) Space

Satellites used for telecommunication relay are kept in a geostationary orbit. A satellite is said to be in such as orbit when:

Select the correct answer using the codes given below :

1, 2 and3 only

1, 3 and 4only

2 and4 only

1, 2, 3 and4

Let's examine each statement:

- A geostationary orbit is geosynchronous (Statement 1) because the satellite's period matches Earth's rotation.

- The orbit must be circular (Statement 2) so its speed and altitude remain constant.

- The orbit must lie in the plane of Earth's equator (Statement 3) so it appears fixed over one spot.

- The altitude is about 35,786 km (not 22,236), but 22,236 miles is the correct value in miles (Statement 4 is correct if units are miles).

Options:

- Option 1: 1, 2 and 3 only

- Option 2: 1, 3 and 4 only

- Option 3: 2 and 4 only

- Option 4: 1, 2, 3 and 4

Correct Answer: Option 4: 1, 2, 3 and 4

All four are correct (22,236 miles altitude), so option 4 is correct.

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