Hi Aspirant!

Defence Industry including military, air force etc. performs the most advanced scientific operations. And in these scientific operations physics plays vital role by conducting researches in lasers, electro-optics, semiconductors, and materials science, etc. The main role of physicists is to analyze the physical properties of materials such as matter affecting living organisms, etc. And after successful experiments, they apply the results to solve the problems, to perform those operations in more better way.

Hope I answered your query, thankyou!