Ch9 Ray Optics Optical Instruments NEET MCQ PYQ Video 3

Ch9 Ray Optics Optical Instruments NEET MCQ PYQ, Class 12 Physics | Chapter 9: Ray Optics and Optical Instruments | NEET MCQ & PYQ | Hindi + English Medium Prepare for NEET 2026, 2027 with the most important Ray Optics and Optical Instruments MCQs and Previous Year Questions (PYQs). This mixed Hindi + English lecture covers all important concepts and exam-oriented questions based on the latest NCERT syllabus. 📚 Topics Covered: ✔ Reflection at Plane & Spherical Mirrors ✔ Refraction at Plane & Spherical Surfaces ✔ Mirror Formula & Lens Formula ✔ Total Internal Reflection (TIR) ✔ Critical Angle ✔ Prism & Deviation ✔ Thin Lens & Lens Maker's Formula ✔ Combination of Lenses ✔ Magnification ✔ Human Eye Defects & Corrections ✔ Simple Microscope ✔ Compound Microscope ✔ Astronomical Telescope ✔ NEET PYQs with Detailed Solutions This lecture is ideal for: • NEET 2026 & 2027 Aspirants • Class 12 CBSE Students • NCERT Revision • Physics MCQ Practice • Previous Year Question Practice • Board + NEET Preparation If this video helps you, please Like, Share, Subscribe, and press the 🔔 Bell Icon for more Physics lectures, MCQs, PYQs, and revision videos. Keywords: Ray Optics NEET, Optical Instruments NEET, Ray Optics MCQ, Ray Optics PYQ, Optical Instruments PYQ, Class 12 Physics Ray Optics, Reflection, Refraction, Total Internal Reflection, Prism, Lens Formula, Mirror Formula, Human Eye, Microscope, Telescope, NEET Physics, NCERT Physics, Hindi English Physics, Physics MCQs, NEET Preparation, Class 12 Physics Hashtags: #NEET #NEET2026 #Physics #RayOptics #OpticalInstruments #Class12Physics #NEETPhysics #MCQ #PYQ #NCERT #PhysicsMCQ #HindiEnglish #CBSE #MedicalEntrance #DYVPhysics Time stamps: 00:00 Q-1 A small source of light is 4 m below the surface of water of refractive index 5/3. In order to cut off all the light, coming out of water surface, minimum diameter of the disc placed on the surface of water is 01:19 Q-2 A ray of light from a denser medium strikes a rare medium as shown in figure. The reflected and refracted rays make an angle of 90° with each other. The angles of reflection and refraction are r and r ′. The critical angle would be 02:57 Q-3 Light enters at an angle of incidence in a transparent rod of refractive index n. For what value of refractive index of material of the rod, the light once entered into it will not leave it through its lateral face whatsoever be the value of angle of incidence? 05:15 Q-4 In total internal reflection if angle of incidence is equal to critical angle for pair of media in contact, what will be angle of refraction? 06:19 Q-5 Optical fibre are based on 06:32 Q-6 For the given incident ray as shown, condition of total internal reflection of ray, required refractive index of prism will be 08:51 Q-7 A small coin is resting on the bottom of a beaker filled with liquid. A ray of light from the coin travels upto the surface of the liquid and moves along its surface. How fast is the light travelling in liquid? 10:09 Q-8 Speed of light in media M1 and M2 are 1.5 × 108 m/s and 2.0 × 108 m/s respectively. A ray of light enters from medium M1 to M2 at an incidence angle i. If ray suffers total internal reflection, value of i is 11:37 Q-9 A ray of light travelling in a transparent medium of refractive index , falls on surface separating the medium from air at an angle of incidence of 45°. For which of the following value of the ray can undergo total internal reflection? 12:57 Q-10 Which of the following is not due to total internal reflection?