India achieved its first successful satellite launch using an indigenous launch vehicle in which year?

Explanation

1980. India achieved its first successful satellite launch using an indigenous launch vehicle in 1980. The SLV-3 (Satellite Launch Vehicle-3) successfully placed the Rohini satellite (RS-1) into orbit on 18 July 1980 from the Sriharikota launch centre. This mission marked a major milestone for ISRO, demonstrating India’s capability to develop and operate its own satellite launch technology.