Q. Consider the following statements regarding India's launch vehicles:

1. PSLV is designed mainly to deliver earth observation satellites into polar sun-synchronous orbits, whereas GSLV is designed mainly to deliver communication satellites into geostationary transfer orbit.
2. PSLV is a three-stage vehicle, while GSLV is a four-stage vehicle.

Which of the above statements is / are correct?
Answer: Both 1 and 2
Notes: Both statements are correct. PSLV (Polar Satellite Launch Vehicle) is designed mainly to deliver earth observation satellites into polar orbits and has three stages. GSLV (Geosynchronous Satellite Launch Vehicle) delivers communication satellites into geostationary transfer orbits and has four stages, with an advanced cryogenic upper stage. This reflects differences in payload capability and intended orbits.