Ray optics | 9.4 Question | NCERT Exercise | Class 12 | physics

In this video, we solve NCERT Class 12 Physics – Chapter 9: Ray Optics and Optical Instruments, Exercise Question 9.4 with a clear, step-by-step explanation using ray optics concepts, sign convention, and standard formulas. This lecture is specially designed for Class 12 Board Exams (CBSE & State Boards) and is also very useful for NEET and JEE Main Physics aspirants. The solution is explained in a proper board-exam answer writing format, helping students understand how to approach, solve, and present numericals correctly. 🔹 What you will learn in this video: ✔ Complete solution of NCERT Exercise Question 9.4 ✔ Important theory of Ray Optics required for this question ✔ Correct use of mirror/lens formula and magnification ✔ Explanation of image position, nature, and size ✔ Ray diagram explanation (where applicable) ✔ Board-exam presentation tips 📌 Chapter Covered: Class 12 Physics – Chapter 9 Ray Optics and Optical Instruments (NCERT) 📚 Best for: • Class 12 Physics students • CBSE & State Board exam preparation • NEET / JEE Main Physics aspirants • Students studying strictly from NCERT 👍 Like, Share & Subscribe for the complete Class 12 Physics NCERT Solutions – Ray Optics series. 🔖 SEO-Optimised Hashtags #Class12Physics #RayOptics #NCERTPhysics #NCERTSolutions #Question9_4 #RayOpticsAndOpticalInstruments #CBSEClass12 #BoardExamPhysics #NEETPhysics #JEEMainPhysics #PhysicsNumericals #NCERTExercise #Class12Boards