Скачать или смотреть LIGHT – REFLECTION AND REFRACTION - 10 Most Important Questions | Pre-Board Series for Class 10

✅ In this video,

✔ Class: 10th
✔ Subject: Science (Physics)
✔ Chapter: Light- Reflection and Refraction (Chapter 9)
✔ Topics Covered in this Video - Sandeep sir breaks down the complete mind map and 10 most important questions Light Reflection and Refraction chapter into easy-to-understand concepts, covering: Laws of Reflection & Refraction, Mirror and Lens formulas, Ray diagrams for mirrors and lenses.

▶️ Full Playlist Link -    • Class 10 Science  One Shot in 30 Minutes⏰&...  
✍️ Session PDF - https://vdnt.in/Ghw7J
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Important Time Stamps

00:00-22:04= Introduction and mindmap,Theory
22:05-25:52= Rays from Sun converge at a point 15 cm in front of a concave mirror. Where should an object be placed so that size of its image is equal to the size of the object?
25:53-28:53= A child is standing in front of a magic mirror. She finds the image of her head bigger, the middle portion of her body of the same size and that of the legs smaller. The following is the order of combinations for the magic mirror from the top.
28:54-32:04= Which of the following can make a parallel beam of light when light from a point source is incident on it?
32:05-33:38= In torches, search lights and headlights of vehicles the bulb is placed
33:39-35:03= At what distance from a convex lens should an object be placed to get an image of the same size as that of the object on a screen?
35:04-38:54= An object is placed at a distance of 10 cm from a convex mirror of focal length 15 cm. Find the position of the image formed by the mirror.
38:55-45:45= A ray of light falls making an angle of theta on the surface of a glass slab. Draw labeled diagrams to show its path also, mark lateral displacement on it.
45:46-48:13= How is the refractive index of a medium related to the speed of light? Obtain an expression for the refractive index of a medium with respect to another in terms of speed of light in these two media?
48:14-51:13= Rohit wants to have an erect image of an object using a converging mirror of focal length 40 cm.
Specify the range of distance where the object can be placed in front of the mirror. Justify.
51:14-57:20= (i) Explain why the refractive index of any material with respect to air is always greater 1.

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