Answer: A satellite launch vehicle is a rocket that carries a satellite from the earth and places it in the required orbit; PSLV (or GSLV).
A launch vehicle has several stages, each with its own fuel. It lifts the satellite above the atmosphere and gives it the horizontal velocity needed to go into orbit; the used stages fall away one by one.
India’s launch vehicles are PSLV (Polar Satellite Launch Vehicle) and GSLV (Geosynchronous Satellite Launch Vehicle).