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Choosing between an MSc in Physics and an MSc in Mathematics for a career at ISRO (Indian Space Research Organization) depends on the specific roles and research areas you are interested in.

An MSc in Physics is particularly relevant for roles at ISRO that involve space science, satellite technology, and instrumentation. This degree provides a strong foundation in fundamental physics concepts, which are crucial for understanding the physical principles behind satellite operations, space missions, and space physics research. Positions such as Research Scientist, Satellite Operations Engineer, or roles related to space-based instruments often require a deep understanding of physics.

On the other hand, an MSc in Mathematics is valuable for roles at ISRO that focus on data analysis, computational modeling, and algorithm development. Mathematics plays a critical role in designing algorithms for satellite data processing, optimizing mission trajectories, and developing mathematical models for space exploration. Positions like Data Analyst, Computational Scientist, or roles involving numerical simulations would benefit from a strong background in mathematics.

If your interest lies in the physical aspects of space missions and satellite technology, an MSc in Physics might be the better choice. However, if you are drawn to data analysis, computational work, or algorithm development, an MSc in Mathematics would be highly suitable. Both degrees are valuable at ISRO.