Lens Maker’s Formula | Ray Optics Class 12 | Derivation & Concept Explained | Lecture 25 |

In this Lecture 25 of the Ray Optics Class 12 Series (24Series Physics), we explore the Lens Maker’s Formula in detail. Understand how the shape and refractive index of a lens affect its focal length, with complete derivation, concept explanation, and numerical examples — all aligned with NCERT Class 12 Physics Chapter 9. 🔹 Topics Covered: Derivation of Lens Maker’s Formula Relation between focal length, refractive index & radii of curvature Sign convention & real-life applications Important formulae & numericals for boards + NEET + JEE 📘 Class 12 Physics Chapter 9 – Ray Optics & Optical Instruments 📚 Perfect for Board Exam Preparation 2025, JEE Main/Advanced, and NEET Aspirants 👉 Don’t forget to Like, Share & Subscribe for the complete Ray Optics Lecture Series! #LensMakersFormula #RayOpticsClass12 #24SeriesPhysics #PhysicsLecture #Class12Physics #BoardExam2025 #JEEPhysics #NEETPhysics