Resolving power of a microscope | Ray Optics Validity | Class 12 Chapter 10 | Physics by Sushil Sir

In this video, we will cover "Resolving Power of a Microscope" and "10.6.4 Validity of Ray Optics," which is an in-depth and advanced topic in Wave Optics. This topic is very important for JEE Advanced, NEET Toppers, and Conceptual Learners**. 🔹 Resolving Power of a Microscope: The ability to see two nearby points separately Minimum Resolution Limit: n → Refractive index of the magnifying medium (~1.5 for oil) 🔹 Factors affecting resolution: Wavelength (λ) ↓ → Resolution ↑ → Blue light is better Numerical Aperture Oil Immersion**: Resolution improves by increasing n 🔹 10.6.4 Validity of Ray Optics: Ray Optics is valid when: Examples: Large lenses → Ray Optics works well Ultra-fine slits → Wave Optics required 📌 This lecture is completely based on NCERT Explained in depth. 📌 With diagrams, comparisons, and real-life examples. 📌 Assertion-Reason, Matching, and Conceptual questions are frequently asked from this topic in NEET and JEE Advanced! ✅ NCERT Based Explanation ✅ Microscope Resolving Power Formula ✅ Numerical Aperture & Oil Immersion ✅ When Ray Optics Fails? ✅ Wave Optics vs Ray Optics ✅ Important for JEE Advanced 2026 ✅ Must Watch for Aspirants Targeting Top Ranks 📢 Previous Video: Resolving Power of Instruments | Lecture 7 –    • प्रकाशिक यंत्रों की विभेदन क्षमता | Resolv...   🔔 Subscribe Now:    / @sciencedeewane_rksh   📌 Playlist: Class 12 Physics NCERT Full Course -    • Class 12 Physics NCERT Full Course   📌 Playlist: Class 12 Biology NCERT One Shot Series With AI :    • 12th Biology ONE SHOT Revision Series With AI   resolving power of microscope class 12, The special power of a wise lady, numerical aperture physics, oil immersion microscope, sushil sir physics, class 12 physics chapter 10, ncert physics class 12, wave optics, physics in hindi, board exam 2026, neet physics preparation, jee main physics, jee advanced physics, when ray optics fails, validity of ray optics, wave vs ray theory, limit of resolution, diffraction effect, #SushilSir #ShukshmDarshiKiVibhedanKshamta #RayOpticsValidity #Class12Physics #Chapter10Physics #NEET2026 #JEE2026 #PhysicsInHindi #NumericalAperture #WaveVsRay #BoardExams2026