allerySLV ఏ సంవత్సరంలో తన మొదటి విజయవంతమైన ఉపగ్రహ ప్రయోగాన్ని చేపట్టింది?
A1975
B1979
C1983
D1980
Answer & Solution
Correct answer: D. 1980
1979లో జరిగిన మొదటి SLV ప్రయోగం కక్ష్యను చేరుకోవడంలో విఫలమైంది, కాగా 1980 ప్రయోగం రోహిణి సిరీస్-I ఉపగ్రహాన్ని కక్ష్యలో ప్రవేశపెట్టింది.
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