Which of the following are 'communication' satellites of India?
A. Aryabhata
B. INSAT-3B
C. EDUSAT
D. Rohini
E. Bhaskara-1
Choose the correct answer from the options given below:
Answer & explanation
Correct answer: option 3
The correct answer is Option (3) → B and C only
A communication satellite relays telephone, television, radio or data signals between places on the Earth; most of India’s are in the INSAT and GSAT series.
A. Aryabhata Not a communication satellite (Incorrect). India’s first satellite (1975) was an experimental scientific satellite for studies in X-ray astronomy, solar physics and the upper atmosphere.
B. INSAT-3B Communication satellite (Correct). Put in orbit in 2000, it carried transponders for business communication and mobile satellite services as part of the INSAT system.
C. EDUSAT Communication satellite (Correct). Launched by GSLV in 2004 (GSAT-3), it was India’s first satellite built for distance education, linking classrooms by satellite.
D. Rohini Not a communication satellite (Incorrect). The Rohini satellites were small experimental satellites put up to test India’s own launch vehicle, SLV-3 (1980).
E. Bhaskara-1 Not a communication satellite (Incorrect). Launched in 1979, it was an earth observation satellite carrying TV cameras and microwave radiometers.