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📅 Date: 7th January, 2026 ⏰ Time: 7:30 PM 📚 Class: 12 (CBSE + ISC) 🎓 Subject: Physics 📖 Chapter: Chapter 8 – Ray Optics 🎥 Lecture: 3 📌 Series: 75 Days Crash Course – Day-53 🏫 Batch: Shikhar Batch 👨🏫 Teacher: EdufyHub’s Physics Expert Welcome to Day-53 of the 75 Days Crash Course for Class 12 Physics (CBSE + ISC). In Lecture-3, we cover the backbone of optics — Refraction of Light, along with Snell’s Law, which is heavily tested in theory, numericals, and ray-diagram questions. This lecture is crucial for understanding glass slabs, prisms, lenses, and optical instruments, making it one of the most important sessions in Ray Optics. ⭐ Topics Covered in Lecture-3: • Meaning of Refraction of Light • Laws of Refraction • Snell’s Law and its Mathematical Form • Refractive Index (Absolute & Relative) • Refraction through Rectangular Glass Slab • Lateral Displacement (Conceptual) • Board-Oriented Questions & Numerical Approach 🎯 Why This Class Is Very Important: • High-weightage topic in CBSE + ISC boards • Forms the base for lenses, prisms & optical instruments • Frequently asked numericals and ray diagrams • Easy marks with proper conceptual clarity • Fully aligned with CBSE + ISC Board Exam 2026 syllabus 🔔 Stay Connected Subscribe to EdufyHub for daily Class 12 Physics Crash Course lectures, PDFs, PYQs, and smart revision strategies. Join us on Telegram • Instagram • YouTube Community for notes and regular updates. ___________________________________________________________________________________ #75DaysCrashCourse #Class12Physics #RayOptics #RefractionOfLight #SnellsLaw #CBSEPhysics #ISCPhysics #BoardExam2026 #EdufyHub #ShikharBatch ___________________________________________________________________________________ 🌐 Be Part of the SHIKHAR Community: 🔗 YouTube: @Edufy_Hub 📸 Instagram: / edufyhub 💬 WhatsApp Channel: https://whatsapp.com/channel/0029VaMN... 📢 Telegram Channel: https://t.me/edufyhub 💙 Don’t forget to LIKE, SHARE, COMMENT, and SUBSCRIBE for more Board-oriented content! ___________________________________________________________________________________ 🎯 Start Your ISC Biology Strong with Chapter 1! 🔔 Don’t forget to Like, Share & Subscribe! ___________________________________________________________________________________ CLASS X CBSE -- MATHS - https://tinyurl.com/4fdxmh8h BIOLOGY - https://tinyurl.com/4xscjhtn CHEMISTRY - https://tinyurl.com/3vfaaxjp PHYSICS - https://tinyurl.com/3u66fhck CLASS X ICSE -- MATHS - https://tinyurl.com/yc4ysyt6 BIOLOGY - https://tinyurl.com/5n7s854y CHEMISTRY - https://tinyurl.com/3vfaaxjp PHYSICS - https://tinyurl.com/26f628bp CLASS XI ISC -- MATHS - https://tinyurl.com/4dz7zrkf BIOLOGY - https://tinyurl.com/2s3bvesr CHEMISTRY - https://tinyurl.com/4t84pkuv PHYSICS - https://tinyurl.com/564v7tdt CLASS XII ISC -- MATHS - https://tinyurl.com/5ymrw7t5 BIOLOGY - https://tinyurl.com/mrxxfb7v CHEMISTRY - https://tinyurl.com/3zbcbn6r PHYSICS - https://tinyurl.com/32mkzspu ____________________________________________________________________________________________ Tags : Science Final Revision,Science Exam Strategy,Last Minute Science Revision,CBSE Science PYQs,Science Paper Solved,CBSE Board Science Important Topics,next toppers,pw foundation,class 12 isc,class 12 isc board,isc baord 2025,isc board live,class 12 chemistry isc,class 12 isc board chemistry,class12 chemistry,class 12 chemistry live class,class 12 chemistry paper leak,class 12 chemistry isc board,class 12 chemistry isc board paper leak,class 12 isc chemistry , CBSE Science PYQs, ____________________________________________________________________________________________