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LIGHT- REFLECTION & REFRACTION (FULL CHAPTER) | CLASS 10 CBSE Video Lecture

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Video Timeline
Video Timeline
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00:00 Start
02:37 Introduction
04:43 Reflection of light
10:01 Refraction of light
16:46 Refractive index
20:40 Refraction of light though Glass Slab
25:13 Indication of Refractive Index
32:16 Formula to calculate refractive index through different mediums
43:33 Ray Diagrams
51:51 Terms related to optical devices
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FAQs on LIGHT- REFLECTION & REFRACTION (FULL CHAPTER) - CLASS 10 CBSE Video Lecture

1. What is the definition of reflection in the context of light?
Ans. Reflection is the process by which light waves bounce off a surface and change direction.
2. How does the angle of incidence relate to the angle of reflection?
Ans. The angle of incidence is the angle between the incident ray and the normal, while the angle of reflection is the angle between the reflected ray and the normal. According to the law of reflection, the angle of incidence is equal to the angle of reflection.
3. What is the difference between regular and diffuse reflection?
Ans. Regular reflection occurs when light waves hit a smooth surface and reflect in an organized manner, such as in a mirror. Diffuse reflection occurs when light waves hit a rough surface and reflect in different directions, resulting in a scattered reflection.
4. What is refraction?
Ans. Refraction is the bending of light waves as they pass from one medium to another, due to a change in their speed. This bending occurs because light waves travel at different speeds in different mediums.
5. How does the refractive index affect the speed of light in a medium?
Ans. The refractive index of a medium is a measure of how much the speed of light decreases when it enters that medium. The higher the refractive index, the slower the speed of light in that medium.
Video Timeline
Video Timeline
arrow
00:00 Start
02:37 Introduction
04:43 Reflection of light
10:01 Refraction of light
16:46 Refractive index
20:40 Refraction of light though Glass Slab
25:13 Indication of Refractive Index
32:16 Formula to calculate refractive index through different mediums
43:33 Ray Diagrams
51:51 Terms related to optical devices
More
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LIGHT- REFLECTION & REFRACTION (FULL CHAPTER) | CLASS 10 CBSE Video Lecture

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