Satellites used for telecommunication relay are kept in a geostationary orbit. A satellite is said to be in such an orbit when: 1. The orbit is geosynchronous. 2. The orbit i circular. 3. The orbit lies in the plane of the Earth’s equator. 4. The orbit is at an altitude of 22,236 km. Select the correct answer using the codes given below:
Options
(a)1, 2 and 3 only
(b)1, 3 and 4 only
(c)2 and 4 only
(d)1, 2, 3 and 4
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