Ray Optics and Optical Instruments - Most Expected MCQs (Part 1) | Class 12 Physics Chapter 9 (LIVE)

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✅ In this video,

✔️ Class: 12th
✔️ Subject: Physics
✔️ Chapter: Ray Optics & Optical Instruments (Chapter 9)
✔️ Topic Name: Most Expected MCQs (Part 1)
✔️ Topics Covered In This Video (Prateek Sir): In this video, we dive into the fundamental concepts of Class 12 Physics Chapter 9. This live session covers Ray Optics & Optical Instruments - Most Expected MCQs , ray optics most important question, mcq on ray optics, ray optics mcq questions, ray optics most important questions, ray optics most important topics, questions on ray optics.
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00:00 introduction: Ray Optics and Optical Instruments - Most Expected MCQs (Part 1)
02:19 MCQs (Que. 1) Calculate the critical angle for glass air surface if a ray of light which is incident in air on the glass surface is deviated through 15°, when the angle of incidence is 45°.
11:24 (Que. 2) Given that if R, = R and R2 = -2 R for a double convex lens of refractive index 1.5. Now this lens renders the rays parallel coming from an illuminated filament at a distance of 6 cm. Calculate the radii of curvature of its surfaces.
24:35 (Que. 3) A convex lens is used to throw on a screen 10 m from the lens, a magnified image of an object. If the unifications is found to be 19, find the focal length of the
35:11 (Que. 4) The image obtained with a convex lens is erect and its length is four times the length of the object. If the focal length of the lens is 20 cm. Calculate the object and image distances.
40:45 (Que. 5) A convex lens of focal length 20 cm is placed coaxially in contact with a concave lens of focal length 25 cm. Determine the power of the combination. Will the system be converging or diverging in nature?
47:58 (Que. 6) Find the focal length and nature of lens which should be placed in contact with a lens of focal length 10 cm so that the power of the combination becomes 5 Diopter.
54:59 (Que. 7) A ray of light passing through an equilateral triangular glass prism from air undergoes minimum deviation when angle of incidence is 3/4th of the angle of prism. Calculate speed of light in prism.
1:04:41 Website Overview
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