PREVIOUS YEAR QUESTIONS
Q.1) Satellites used for telecommunications are kept in a geostationary orbit. A satellite is said to be in such an orbit when: (UPSC 2011)
- The orbit is geosynchronous.
- The orbit is circular.
- The orbit lies in the plane of the Earth’s equator.
- The orbit is at an altitude of 22,236 km.
Select the correct answer using the codes given below:
a) 1, 2 and 3 only
b) 1, 3 and 4 only
c) 2 and 4 only
d) 1, 2, 3 and 4
Answer: (a)
Q.2) An artificial satellite orbiting around the Earth does not fall down. This is so because the attraction of Earth (UPSC 2011)
a) does not exist at such distance.
b) is neutralized by the attraction of the moon.
c) provides the necessary speed for its steady motion.
d) provides the necessary acceleration for its motion.
Answer: (d)
Q.3) Satellite having the same orbital period as the period of rotation of the Earth about its own axis is known as: (CDS-II/2013)
a) Polar satellite
b) Stationary satellite
c) Geostationary satellite
d) INSAT
Answer: (c)
