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Welcome to eGyanKosh, your comprehensive resource for academic excellence! In this dedicated section, we present Unit-1: Fundamental Concepts and Definitions, tailored specifically for IGNOU’s 2025 curriculum. This study material is designed to provide you with a thorough understanding of essential concepts and terminologies that form the backbone of your studies. Best of all, you can download this invaluable resource free of charge, ensuring that you have access to quality educational materials at your fingertips. Whether you’re preparing for exams or simply looking to enhance your knowledge, this study material is an indispensable tool for your academic journey. Dive in and explore the fundamental concepts that will pave the way for your success!