In this video, we provide a complete explanation of **Cauchy's Integral Theorem**, one of the most fundamental theorems in complex analysis and mathematical physics. 💡 This theorem states that if a function f(z) is analytic and the curve C is closed and lies entirely in a simply connected domain, then the line integral of f(z) over C is zero: ∮ f(z) dz = 0 🎯 What you'll learn in this video: The meaning and mathematical statement of Cauchy's Integral Theorem Conditions for applying the theorem (analyticity, closed curve, etc.) Step-by-step derivation using Green's theorem Real-life applications in Physics and Engineering Explanation in simple Hindi for M.Sc. First Year students Notes and PDF support available 📚 Subject: Mathematical Physics / Complex Analysis 🎓 Course: M.Sc. Physics (First Year) 🕒 Duration: Just 10 Minutes 🗂️ Language: Hindi (with proper explanation) 📘 Suitable for: B.Sc., M.Sc., NET/JRF, GATE aspirants 🎥 This video is ideal for: Revising key complex analysis concepts Preparing for university exams Getting conceptual clarity with visuals 📝 Notes PDF Available – Check video description or comments section. 👉 Don’t forget to LIKE, COMMENT, and SUBSCRIBE to support the channel! #CauchysIntegralTheorem #ComplexAnalysis #MathematicalPhysics #MSCPhysics #PhysicsInHindi #AnalyticFunction #ContourIntegration #MScFirstYear #GreenTheorem #ComplexFunction #PhysicsLecture #EngineeringMath #ShortLecture #GhatolSirPhysics