Taking computer science, physics, mathematics, and economics in class 11th CBSE is a great combination if you have an interest in these subjects. It provides a well-rounded education that can be beneficial for various career paths, including computer science, physics, economics, and related fields. This combination allows you to develop strong analytical, problem-solving, and mathematical skills, which are highly valued in many industries.
Regarding becoming a theoretical physicist, it is not necessary to have a formal background in chemistry. The core subjects for a theoretical physicist are typically physics and mathematics. Chemistry may be beneficial in some areas of physics, such as quantum chemistry or chemical physics, but it is not a mandatory subject for pursuing a career as a theoretical physicist. However, it is always good to have a broad scientific knowledge base, and taking chemistry can provide you with additional insights and a better understanding of the natural world.
Ultimately, the most important aspect is to follow your interests and passions. If you are genuinely enthusiastic about computer science, physics, mathematics, and economics, this combination can open up diverse opportunities and lay a solid foundation for your future academic and career pursuits.