Defence Technology refers to advanced scientific innovations and equipment used by military forces for national security. In SSC CGL, this topic covers modern weapons, defence systems, and strategic technologies used by Indian Armed Forces. Core Defence Technologies include missile systems, radar technology, aircraft, naval vessels, and cyber warfare tools. India has developed indigenous defence capabilities through organizations like DRDO (Defence Research and Development Organisation), HAL (Hindustan Aeronautics Limited), and ISRO for military satellites.
Missile Classification follows range-based categories: Short Range (up to 1000 km), Medium Range (1000-3000 km), Intermediate Range (3000-5500 km), and Intercontinental (above 5500 km). Indian missiles like Agni series, Prithvi, and BrahMos fall into different categories. Radar Technology uses radio waves to detect objects. It works on the principle of reflection - radio waves bounce back from targets. Modern radars can track multiple targets simultaneously and provide early warning systems.